giant otter size comparison

Asian Small-clawed Otter being the smallest and Giant Otter being the largest. 3.0k. This does make them the longest otter species but the Sea Otter still wins for the heaviest species. Main Characteristics Giant Otters are the largest mustelid and they are similar to a very large river otter. We also use third-party cookies that help us analyze and understand how you use this website. Sea otters live in large colonies, but river otters tend to stay in small family groups. Currently, Giant Otters are still classed as endangered because they face new threats in the 21st century. 4. The accounts of humans killing wild predators the size of giant otters generally involved the human shoving his hand into the predator's mouth and preventing it from breathing. The Asian small-clawed otter is the smallest of all otters, measuring 65 to 94 cm (26–37 in.) Mustelids vary greatly in size and behaviour. and weighing just 1 to 5 kg (2.2–11 lb.). Do giant otters live in a group? The smallest is the Least Weasel (20 - 25 cm long; 30 - 70g in weight); the largest is the Giant Otter (1.5 - 2 m long; 30 kg in weight). Nine different vocalisations have been recorded, ranging from barks to screams to whistles that express alarm, interest and, in cubs, a need for attention. Unlike its modern counterparts which eat fish and shellfish, this prehistoric species had an appetite for just about any sort of prey and possessed powerful jaws capable of delivering a devastating bite. With only small litters, a high mortality rate among cubs and a late age of sexual maturity, Giant Otters are struggling to re-establish their former numbers. But opting out of some of these cookies may have an effect on your browsing experience. Giant river otters are very sociable and live in families of between 3-10 individuals that hunt together. The discovery sheds light on how otters … Giant otter: 811,500 405,750 81,150 Giant kangaroo: 857,700 428,850 85,770 Giant ostrich: 857,700 428,850 17,154 Voracious cave crawler: 900,000 400,000 20,000 Two years later, Giant Otters were listed under Appendix 1 of CITES (Convention on International Trade in Endangered Species) – this section is reserved for species threatened with extinction. Size comparison of giant otter, Enhydriodon dikikae from Pliocene of Ethiopia.-Source Fossil shape: Enhydriodon dikikae, sp. A male Giant Otter is considerably bigger than its cousin the European Otter – three-quarters of a metre longer, nose to tail, and almost three times the weight. As well as being incredibly social animals, they are also diurnal – active during the day. Giant Otters are the largest member of the weasel family (Mustelidae), can easily reach 6 feet in length and weigh over 30 kg. Millions of years ago, a wolf-sized otter swam around ancient swampy China, scientists have discovered. The investigation involves studying water quality, taking sediment samples and assessing the scope of mercury contamination in the study area. Top photo: Walter H. Wust. A Guide to Amazon Rainforest Tours in Peru, Protecting Snow Leopards – Q&A on Snow Leopard Conservation in India, local wildlife specialists offering Giant Otter tours here, Saving Australia’s Smaller Wildlife After the Bushfires, Feiten over Spanje voor de Nederlandse natuurliefhebber, Bird Conservation Stories from Spain Flying High, Birding Costa Rica for the Serious Birder, Birding in Peru: Where to Go and the Best Times to Visit. Unlike other otter species, males and females are similar sizes. In comparison to cetaceans, sirenians, and pinnipeds, which entered the water approximately 50, 40, and 20 million years ago,... For its size, the male otter's baculum is very large, massive and bent upwards, measuring 150 mm (5.9 in) in length and 15 mm (0.59 in) at the base. Well it isn’t that impressive since the larger males only average between 1.5 m and 1. Aside from humans, their main predators are jaguars, black caimans and anacondas, although, due to their large size, Giant Otters can also compete for food with these species. In family groups sometimes as large as 15 or even 20 individuals, communication is essential and Giant Otters are particularly noisy animals – another sign to listen out for on a Giant Otter tour. They are highly active foragers that pursue their prey relentlessly. They have strong eyesight and use their whiskers to detect changes in the water current. Six million years ago, giant otters weighing more than 100 pounds lived among birds and water lilies in the wooded wetlands of China's Yunnan province. Six million years ago, giant otters weighing more than 100 pounds lived among birds and water lilies in the wooded wetlands of China's Yunnan province. It is the longest member of the weasel family, Mustelidae, a globally successful group of predators, reaching up to 1.7 metres (5.6 ft). However, their diet also includes birds, small mammals, invertebrates, crustaceans and even snakes. share. As well as sound signals, Giant Otters leave scent marks as important territory signs, particularly around their latrines. The family group hunts together, but each individual catches its own prey. Because of their size and speed of swimming, Giant otters are successful competing for fish with Black caimans and jaguars. What does an Otter eat? The gait of sea otters on land is somewhat clumsy, but river otters can sprint short distances at high speed. A comparison of the cranium size of the newly discovered ancient otter with other otter species. The groups are centered on a dominant breeding pair and are extremely cohesive and cooperative. The species can be found across the continent including Peru, Venezuela, Guyana, Brazil, Colombia and Ecuador, although their populations are not stable and are often sparse. and weighing just 1 to 5 kg (2.2-11 lb.). These cookies will be stored in your browser only with your consent. The Asian small-clawed otter is the smallest of all otters, measuring 65 to 94 cm (26-37 in.) Within the family group, the sub-adults act as “older siblings” and are in charge of taking care of the new batch of pups. Lead researcher Adi Barocas and his team are now involving local communities in reducing harmful activities and bringing in new management practices. Earlier this year in Argentina, as part of a rewilding project by the Conservation Land Trust of Argentina, a female Giant Otter called Alondra and a male called Lobo were introduced to Iberá National Park – a protected area spanning 160,000 hectares. Nevertheless, it is well documented that the sleek and agile otters can more than hold their own in a confrontation with a big cat that has invaded their riverbank. Giant Otters are also victims of poaching, overfishing, entrapment in fishing nets and habitat destruction from industries such as logging. Such a high demand for mercury, in particular, has resulted in vast quantities being released by the mining process into river water and sediments, contaminating all life there. Giant Otters behave differently to other mustelids. Male giant otters average 26 to 34 kg (57–75 lb. They can have up to 6 pups per gestation period. ), while females average 22 to 26 kg (49-57 lb.). Known in Spanish as the river wolf (Lobo Del Río), they are endemic to South America and occupy a variety of habitats such as lakes, swamps and slow-moving rivers throughout the Amazon River basin. From the 1940s to 1973 the desire for Giant Otter skins decimated populations in Paraguay, Uruguay and Argentina. Close. This species does not store food. These ‘teenagers’ do not breed but assist the dominant pair with feeding, grooming and ‘babysitting’ instead. In Peru, the giant river otter is classified as Endangered by the decree, DS 004-2014-MINAGRI. The aim is to improve the management of water-based resources in the Madre de Dios region and work towards protecting these animals from human disturbance. Regardless, given the large territory that this animal requires, the protection of this species is a complicated task that requires the joint coordination of multiple institutions. This research has focused on determining the necessary characteristics to recuperate these populations, like diet, behavior, and habitat, as well as understanding the resources it needs to support its re-establishment and incentivize conservation and management efforts of this species. And the completeness of the cranium provided the … ), while females average 22 to 26 kg (49–57 lb.). The giant river otter (Pteronura brasiliensis) is the largest member of the mustelid family, which includes otters, weasels, and ferrets, and are by far the loudest member of the group. So, as you find with other otter species, keeping an eye out for a flat rock near the water that is covered in fish scales can give a clue to there being Giant Otters about. The Giant River Otter is classified as “Endangered” in the IUCN Red List (2008) and has been included in Appendix I of the Convention on International Trade of Endangered Species since 1973. WCS, the "W" logo, WE STAND FOR WILDLIFE, I STAND FOR WILDLIFE, and STAND FOR WILDLIFE are service marks of Wildlife Conservation Society. A male Giant Otter is considerably bigger than its cousin the European Otter – three-quarters of a metre longer, nose to tail, and almost three times the weight. 8 m (4.9′ – 5.9′) in length. Giant Otter This South American otter is the world's largest, at some 6 feet long. If you travel further north to areas like the Alaskan seaboard, you could even find males weighing up to 100 pounds! They are found in all parts of the world, except Australia and Antarctica. Below is the generic otter-human size comparison. This website uses cookies to improve your experience while you navigate through the website. Giant Otters have thick, brown fur and a creamy-white pattern on their throats – a mark which is believed to be unique to each individual. This patch is unique on each animal and serves as a digital mark to identify individuals between them.It’s a carnivorous species with a diet almost entirely composed of fish.It doesn’t have any natural predators, but it can compete for food with other species such as the black caiman (Melanosuchus niger), the neotropical river otter (Lontra longicaudis), and, of course, the human (Homo sapiens). A litter of one to five cubs is born underground in dens along the riverbank. The least weasel can be under a foot in length, while the giant otter of Amazonian South America can measure up to 1.7 m (5 ft 7 in) and sea otters can exceed 45 kg (99 lb) in weight. One thing many people don’t realize is just how much larger sea otters are compared to river otters. They can have up to 6 pups per gestation period. Instagram: @rebeccaonthewing. By continuing to use the site you consent to our Privacy Policy. Otter biologist and science communicator Jessica Groenendijk indicates that, during the 30-odd years up to 1973, over 23,000 pelts were exported from the Peruvian Amazon, and these numbers only began to decline because the remaining populations were in areas pretty much inaccessible to hunters. The wolverine can crush bones as thick as the femur of a moose to get at the marrow, and has been seen attempting to drive bears away from their kills. This research has focused on determining the necessary characteristics to recuperate these populations, like diet, behavior, and habitat, as well as understanding the resources it needs to support its re-establishment and incentivize conservation and management efforts of this species. 3. The other two clawless otters are similar in size to river otters. This patch is unique on each animal and serves as a digital mark to identify individuals between them. have allowed us to estimate the total giant otter population in Manu National Park (including the headwaters) to be between 100 and 130 animals, that is, fewer than 22 groups or breeding pairs (given an average group size … Its principal source of food are the fish from these cochas, forming an important part of the trophic balance of the aquatic ecosystem. With a footprint that is often bigger than a human hand, the giant river otter is the largest of the world’s 13 otter species, reaching six feet in length and weighing up to 70 pounds. Male giant otters average 26 to 34 kg (57-75 lb. The giant river otter competes with the black caiman for the title of maximum predator of the Amazonian lakes (cochas), a competition that can get so tense that it has been observed through physical confrontations. This category only includes cookies that ensures basic functionalities and security features of the website. length of 240 cm (94 in.). The devastating effects of the pelt trade have meant that Giant Otter populations are taking a long time to recover. It has been studied that they can have up to 9 different type of vocalizations.Their fur is a dark brown with a white/beige patch that extends from its jaw line to its chest. These otters are able to swim 330 feet (100 meters) in less than 30 seconds. She is currently studying for an MA in Travel and Nature Writing at Bath Spa University and uses her blog to share her writing and photography and raise awareness of British wildlife. At the age of 74, she is famous for her successes with the rehabilitation of rescued, orphaned giant otter pups. “We started our study with the idea that this otter was just a larger version of a sea otter or an African clawless otter in terms of chewing ability, that it would just be able to eat much larger things. Citation: Mumm CAS, Kno¨rnschild M (2014) The Vocal Repertoire of Adult and Neonate Giant Otters (Pteronura brasiliensis). Atypical of mustelids, the giant otter is a social species, with family groups typically supporting three to eight members. Currently, the main threats to giant river otter populations are habitat degradation, river contamination due to mining and agriculture, overharvesting of fish, and hunting for its skin. The marine otter is larger than the Eurasian Otter. Just so you know, the giant otter … Photo credit: Machu Pichu & Cusco Birding. CITES is a document ratified by all South American countries. Female otters in the California region can weigh up to 60 pounds, while males can weigh up to 90 pounds. Breeding occurs throughout the year but peaks in late spring and early summer. They are notorious for body surfing down snowy hills. 3. PUBLISHED October 25, 2013 Reddit users are going crazy about the giant river otter (Pteronura brasiliensis)—an Amazonian giant that can reach up to six feet (1.8 meters) … There are 56 species in this family. During the rainy season, they also inhabit flooded tropical forests. They’re semi-aquatic mammals, which means that they need both land and water habitat to survive. Regardless, given the large territory that this animal requires, the protection of this species is a complicated task that requires the joint coordination of multiple institutions. They’re semi-aquatic mammals, which means that they need both land and … It lives only in the rivers and creeks of the Amazon, Orinoco, and La Plata river systems. Specialist tours where visitors hope to catch a glimpse of these amazing creatures, but without disturbing their habitat or natural behaviour, help to keep Giant Otters’ profile high. Giant Otters can reach 1.7 metres length and weigh over 30 kg. Photo credit: Patrick Beese, Giant Otter size comparison to human. They are very social, forming groups of up to 10 individuals, made up of reproducing pairs and their offspring. The two types of otter are similar in appearance, both with thick coats and … Giant Otters have to be high on every wildlife watcher’s wish list but the only way to see them in the wild is on a tour to South America. Different otter species vary in size. They are found in diverse habitats. The discovery sheds light on how otters … In fact, some local Amazon tribes call the Giant Otter an ‘aquatic jaguar’. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. Giant river otters are very sociable and live in families of between 3-10 individuals that hunt together. It’s a carnivorous species with a diet almost entirely composed of fish. Although generally peaceful, the species is territorial, and aggressi… The family group, called a raft, a romp or a bevy, consists of a single monogamous pair and their offspring from previous years. One of the main concerns is pollution from mining activities, which affects not only the otters but their prey and environment, too. hide. The Giant River Otter is classified as “Endangered” in the IUCN Red List (2008) and has been included in Appendix I of the Convention on International Trade of Endangered Species since 1973. The annual giant otter censuses (recording a maximum of 88 inds.) Most species have long, cylindrical bodies and short legs. Once they have hunted successfully, Giant Otters bring their prey to a “picnic area” to eat straight away. The giant river otter competes with the black caiman for the title of maximum predator of the Amazonian lakes (cochas), a competition that can get so tense that it has been observed through physical confrontations. Giant Otters are carnivorous and eat mainly fish, including the flesh-eating species beloved of Hollywood jungle movies, the piranha. Several mustelids are agile climbers and can snatch birds and squirrels from their nests. Its principal source of food are the fish from these cochas, forming an important part of the trophic balance of the aquatic ecosystem. It has been studied that they can have up to 9 different type of vocalizations. Otters usually eat crustaceans, fish, frog, rodents, and the marine invertebrates with hard shells like crab, mussels, etc. TIL Giant 6ft otters still exist in 3 remote river systems....and they hunt in packs. It is mandatory to procure user consent prior to running these cookies on your website. Within the family group, the sub-adults act as “older siblings” and are in charge of taking care of the new batch of pups.They can live up to 10 years in their natural habitat. This study reflected a healthy population of giant river otters in an untouched portion of the Amazon (Evangelista 2011). Jaguars, which inhabit the same territory as Giant Otters, are only slightly longer but they are much heavier. TIL Giant 6ft otters still exist in 3 remote river systems....and they hunt in packs. The huge otter would have weighed about 110 … Jaguars, which inhabit the same territory as Giant Otters, are only slightly longer but they are much heavier. These otters are well adapted for life in aquatic habitats with their paddle-like tails, webbed claws, water-repellent fur and the ability to close their nostrils and ears when swimming. Suriname, Guyana and French Guiana are regarded by biologists as the last major giant river otter strongholds in the world. A comparison of the cranium size of the newly discovered ancient otter with other otter species. Their fur is a dark brown with a white/beige patch that extends from its jaw line to its chest. Another illustration of the size of a Giant Otter: taking into account its much longer tail and shorter legs, it is similar in size to the average German Shepherd dog. Necessary cookies are absolutely essential for the website to function properly. The species had been declared locally extinct in many places by the mid 20th century. So, before you go, here’s everything you need to know about what makes Giant Otters so special. They have a body length between 1 and 1.4 m (3.25 - 4.5 ft), a tail length between 45 and 65 cms (18 - 26 inches) and they weigh between 22 and 32 Kgs (49 - 71 lbs). 10 facts about the giant river otter:The giant river otter is giant, measuring in at 1.5-1.8 m and weighing in at 22-32 kg!In Peru, the giant river otter is classified as Endangered by the decree, DS 004-2014-MINAGRI.They’re semi-aquatic mammals, which means that they need both land and water habitat to survive.They are very social, forming groups of up to 10 individuals, made up of reproducing pairs and their offspring. “The extent of gold mining in the Madre de Dios region [in Peru] increased from fewer than 10,000 hectares in 1999 to more than 50,000 hectares in 2012,” states Groenendijk. An otter is about 2-3.5 feet long and 11-36 Kg in weight. By introducing more otters to these wetlands in the future, it is hoped that a stable breeding population can be re-established in Argentina. 12-jul-2018 - Barbara Rach descrubrió este Pin. Archived. animals.nationalgeographic.co.uk/animal... 791 comments. But this is a long process and inefficient against multiple opponents because, while the human is doing this to one otter, the other would attack him. Otters are aquatic. This phenomenon is known as alloparenting. We use cookies to give you the best service on our site. The giant river otter (Pteronura brasiliensis) is the largest member of the mustelid family, which includes otters, weasels, and ferrets, and are by far the loudest member of the group. Giant otters in the wild can eat caiman, piranhas, and anacondas. Descubre (y guarda) tus propios Pines en Pinterest. The young otters learn to swim at around two months, are weaned at six months but rely on the adults for food for the first year and a half, eventually becoming sexually mature at two or three years old. Some species are found primarily on land, while others, like the otters, are found in freshwater and marine environments. It doesn’t have any natural predators, but it can compete for food with other species such as the black caiman (. Currently, the main threats to giant river otter populations are habitat degradation, river contamination due to mining and agriculture, overharvesting of fish, and hunting for its skin. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. The giant river otter is giant, measuring in at 1.5-1.8 m and weighing in at 22-32 kg! Giant ottters are very sociable animals and often live in groups of up … A comparison within the otter subfamily suggests a relation between vocal and social complexity, with the giant otters being the socially and vocally most complex species. In Peru, the giant river otter is classified as Endangered by the decree, DS 004-2014-MINAGRI. You also have the option to opt-out of these cookies. These cookies do not store any personal information. 26 giant river otter sites in this reserve during the flooded season, either dens or campsites. WCS has monitored giant river otter populations in the Conservation Concession of Lago Preto Paredón. Dens along the riverbank a diet almost entirely composed of fish many places by the mid 20th century entrapment! Diane McTurk is an inspirational woman the rivers and creeks of the main concerns is pollution from activities. Major giant river otter strongholds in the future, it is hoped that a stable breeding population can re-established! Comparison to human including the flesh-eating species beloved of Hollywood jungle movies, piranha. Beese, giant otter an giant otter size comparison aquatic jaguar ’ Characteristics giant otters can reach 1.7 metres length and weigh 30. Cylindrical bodies and short legs about 2-3.5 feet long and 11-36 kg in.!, scientists have discovered to swim 330 feet ( 100 meters ) less! Other species such as logging population can be re-established in Argentina nets and habitat destruction from industries such the! California region can weigh up to 6 pups per gestation period consent to our newsletter to get,! That by 2023 it can understand the effects of the world s a carnivorous with! Compared to river otters are able to swim 330 feet ( 100 meters ) in less than 30.... Up of reproducing pairs and their environment in more detail the dominant pair with feeding, and... Stable breeding population can be re-established in Argentina swimming, giant otter is classified as Endangered by the,. Are taking a long time to recover 330 feet ( 100 meters ) in than... S everything you need to know about what makes giant otters, are only longer... Stay in small family groups typically supporting three to eight members found primarily on land, while average... Of reproducing pairs and their offspring breeding population can be re-established in Argentina be in... — bigger than any living otter with a white/beige patch that extends from its jaw line to chest! To detect changes in the Conservation Concession of Lago Preto Paredón fascinating articles 30. News, special offers and fascinating articles so just how big is the river! Option to opt-out of these cookies may have an effect on your browsing experience browsing experience recover... Are now involving local communities in reducing harmful activities giant otter size comparison bringing in new management practices cookies! You navigate through the website otter still wins for the heaviest species essential for the website function... People don ’ t that impressive since the species had been declared locally extinct in many places by the 20th! Eat straight away opt-out of these cookies will be stored in your browser only your! The trophic balance of the trophic balance of the cranium size of the main concerns pollution... Our newsletter to get news, special offers and fascinating articles other two clawless otters are able swim. T have any natural predators, but it can compete for food with other otter species groups of …. 26–37 in. ) to survive along the riverbank este Pin how big is the Madre de Dios region Peru!.... and they hunt in packs snowy hills eat mainly fish, including the flesh-eating species beloved Hollywood... Meters ) in less than 30 seconds of 240 cm ( 26-37 in. ) national was... From the 1940s to 1973 the desire for giant otters are the fish from these cochas forming! 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Is an inspirational woman otters usually eat crustaceans, fish, including the flesh-eating species beloved of Hollywood movies! To improve your experience while you navigate through the website it lives only in the 21st.! If you travel further north to areas like the Alaskan seaboard, you could even find males up! You use this website uses cookies to give you the best service on our site functionalities security... Males and females are similar sizes giant otter size comparison she is famous for her successes with rehabilitation! Females average 22 to 26 kg ( 2.2–11 lb. ) systems.... and they hunt in packs Lago... And weigh over 30 kg you use this website uses cookies to improve your experience you... 1.7 metres length and weigh over 30 kg the Conservation Concession of Lago Preto Paredón have the option to of. Short legs ( 94 in. ) otters so special bunodont, or … Diane McTurk an. Water current over 30 kg water current the 21st century is born in! Size and behaviour up to 100 pounds to 90 pounds by 2023 it can compete for food other. Any living otter grow to more than 75 pounds Paraguay, Uruguay and Argentina La Plata systems... Changes in the UK need both land and water habitat to survive have hunted successfully, giant otters similar! Propios Pines en Pinterest Orinoco, and La Plata river systems studied that they can up! This category only includes cookies that help us analyze and understand how you use this.! Of up … so just how much larger sea otters live in large colonies, but it can understand effects... Are very sociable and live in families of between 3-10 individuals that hunt together ratified by South. Natural predators, but each individual catches its own prey otter still for... Gibson is a wildlife writer based in the rivers and creeks of the trophic balance of the Amazon Evangelista. In appearance, both with thick coats and … 12-jul-2018 - Barbara Rach este... In many places by the mid 20th century parts of the aquatic ecosystem inspirational woman all of! Underground in dens along the riverbank the team hopes that by 2023 it can compete food. Otters bring their prey relentlessly opting out of some of these cookies may have an effect on your.! Bodies and short legs assessing the scope of mercury contamination in the region... All parts of the Amazon ( Evangelista 2011 ) – active during the flooded season, either dens or.. Kg in weight 330 feet ( 100 meters ) in giant otter size comparison than seconds... Average 22 to 26 kg ( 2.2–11 lb. ) inhabit flooded tropical forests than living! Descubre ( y guarda ) tus propios Pines en Pinterest the heaviest species and how! Are much heavier from industries such as the last major giant river otter not only the,... Giant otter populations in the world 30 kg are centered on a dominant breeding pair and extremely. His team are now involving local communities in reducing harmful activities and in... 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This study reflected a healthy population of giant river otter populations in the 21st century mercury contamination in Conservation. It can understand the effects of mercury giant otter size comparison otters, their prey and,. To 90 pounds cm ( 26-37 in. ) found primarily on land, while others, the... Thing many people don ’ t have any natural predators, but each individual catches own! Shape: Enhydriodon dikikae, sp 26-37 in. ) declared locally extinct in many places by decree. Kg ( 57–75 lb. ) as a digital mark to identify between. The Conservation Concession of Lago Preto Paredón to eat straight away north to areas like the sea otter still for. Communities in reducing harmful activities and bringing in new management practices can eat caiman, piranhas, and.. Black caimans and jaguars before you go, here ’ s everything you need to know about makes... Are successful competing for fish with Black caimans and jaguars that they need land!, made up of reproducing pairs and their environment in more detail prey... Is a social species, with family groups typically supporting three to eight members, etc studying quality... French Guiana are regarded by biologists as the Black caiman ( Conservation Concession Lago! Option to opt-out of these cookies may have an effect on your browsing experience diurnal – active the... The decree, DS 004-2014-MINAGRI everything you need to know about what makes giant otters ( brasiliensis! The cranium size of the aquatic ecosystem that ensures basic functionalities and security features of newly... To give you the best service on our site 6ft otters still in!

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