There are 56 species in this family. They are found in diverse habitats. The giant otter is the largest and the second heaviest (the sea otter is the heaviest) of the Mustelidae or weasel family. 2. The largest otter alive today is the South American giant river otter, weighing up to about 70 pounds. The river otter is protected and insulated by a thick, water-repellent coat of fur. The other two clawless otters are similar in size to river otters. and 3 to 14 kg (7-31 lb.). Otter Evolution and Ancestors. This study reflected a healthy population of giant river otters in an untouched portion of the Amazon (Evangelista 2011). River Otter (Lutra canadensis) Description The otter is the largest member of the weasel family (Mustelidae) found in South Carolina. Giant armadillos are very rare and patchy distributed.The total number of their population is not known but presently decreasing. Archived. Otters can transmit rabies to humans and pets. River otters and giant otters hunt by using their vibrissae to detect movements of prey in the water. It is speculated that the Otter as we know it today may have evolved significantly about 7 million years ago. The Neotropical otter, Lontra longicaudis (Mustelidae) is a semi-aquatic mustelid that exploits a variety of freshwater habitats. Unlike the giant river otters these guys only have partially webbed front paws which allows them to grasp more effectively almost like human fingers. We recorded five wild and three captive giant otter groups. The largest otter is the giant otter. This highly efficient predator is the largest member of the otter or weasel family. Are Otters Dangerous to Humans? Their long tail may add as much as 70cm (28in) to this body length. 97% Upvoted. If an otter feels threatened, its heavy, muscular body and sharp claws are enough to overpower pets and small children. Appearance. River otters are rambunctious, aquatic, streamlined mammals that spend much of their time in the water. They reach adult size at 9 to 10 months old. Close. report. Despite its common name, the North American river otter is equally comfortable in either coastal marine or freshwater habitats. Otters Physical Characteristics Size 1. Giant River Otter. As their name suggests, sea otters live mainly near the sea, spending most of their time in the water. Study sites and study animals. The two types of otter are similar in appearance, both with thick coats and … 17. Only 5,000 left in the wild: This may sound like a lot to some people. The North American river otter (Lontra canadensis), also known as the northern river otter or common otter, is a semiaquatic mammal endemic to the North American continent found in and along its waterways and coasts. The Giant Otter (Pteronura brasiliensis) is a South American carnivorous mammal, it lives mostly in and along the Amazon River and in the Pantanal. BFQ: 127.3 Meanwhile, About its diet, Giant otter only feeds on snakes, fish, turtle, crabs, and small caiman. Otters and Humans Relationship. For that to occur though humans need to accept responsibility for what they have done over the course of time. The pests can grow up to 4 feet long and weigh up to 30 pounds. of food daily. Like most wildlife, otters may be hostile when confronted. Different otter species vary in size. Sea otters eat about 25% to 30% of their weight. Some species are found primarily on land, while others, like the otters, are found in freshwater and marine environments. They are found in all parts of the world, except Australia and Antarctica. The discovery sheds light on how otters … The locomotory adaptations of the Giant otter shrew, combined with the loss of the clavicle, indicate the extreme specialism of P. velox and its deviation from the ancestral tenrecid body plan (Kingdon, 1974). The future of many species of Otters has almost been destroyed due to selfishness on the part of humans. The giant otter is the longest of the otter species but shares a similar weight with the sea otter.Male giant otters can attain a length of 1.5-1.7m (4.9-5.6ft). and weighing just 1 to 5 kg (2.2-11 lbs.). Gray Wolf (Canis lupus) 493.5 Newton. ABSTRACT . Adult muskrats are the size of a football, (their body 16-24 inches long, long narrow tail 7-11 inches), Otters (Lontra canadensis), are 3 to 4 feet long, Otters can remain submerged for several minutes, dive to 55 feet and swim up to a quarter-mile underwater. There are historical accounts of male giant river otters that grew to be over seven feet in length. 3.0k. Posted by 7 years ago. River otters eat 15% to 20% of their total body weight each day. Giant otters are an endangered species living in the Amazon, Orinoco, and La Plata river systems in large, gregarious families. A large male may consume as much as 11 kg (25 lb.) Almonte 503 1995) and the research suggest they have complex vocal systems. River otters live near rivers and other sources of fresh water. Giant otter shrews range from the Cross River in Nigeria through central and eastern Africa down to the Zambezi (Timberlake, 1998). The largest river otter is the North American river otter, ranging from 100 to 153 cm (39-60 in.). An average giant otter will weigh between 22 and 32kg (49-71lbs).. An adult North American river otter can weigh between 5.0 and 14 kg (11.0 and 30.9 lb). It can grow to nearly six feet in length—the size of a pony. save. These hydrodynamic members of the weasel family are voracious predators. An otter is any of the 13 living species of semiaquatic or aquatic mammals. There is scientific evidence to suggest Otters have been on Earth for the past 23 million years. The giant otter usually easier to be found along the Amazon River and Pantanal. A third eyelid, or nictitating membrane, protects the eye and allows the otter to see when swimming underwater. The otter has a long cylindrical body with a powerful tail, making it ideal for life in the water. animals.nationalgeographic.co.uk/animal... 791 comments. On the IUCN Red List, the species is listed as Vulnerable (VU). Ecological niche. Male giant otters average 26 to 34 kg (57-75 lbs. The smallest river otter is the marine otter, averaging 87 to 115 cm (34-45 in.). The Asian small-clawed otter is the smallest of all otters, measuring 65 to 94 cm (26-37 in.) They come in many sizes. Methods of Collecting Food. Sea otters live in large colonies, but river otters tend to stay in small family groups. Size. Adult otters measure 35 to 55 inches in length, about one-third of which is tail. The Asian small clawed otters are the smallest otters in the world. The North American river otter (Lontra canadensis) is a shy, if playful, weasel topping out at 30 pounds and five feet from head to tail.Otters are carnivores, eating mainly fish, crayfish, and frogs River otters also have long, muscular tails unlike their sea counterparts. Giant armadillo is the key species, controlling the population of termites throughout its range, thus helping the ecosystem keep balance. This article will refer to the twelve species of river otter, information about sea otters can be viewed here.Read on to learn about the otter. TIL Giant 6ft otters still exist in 3 remote river systems....and they hunt in packs. The body of giant sea otter can grow and reach the number of 1.7 m with 32 kg of weight. Otters belong to a mammalian family including the weasel, badger, marten and mink. ), while females average 22 to 26 kg (49-57 lbs.). The greatest difference is in their bulk, as the largest male mink only weigh a little over 1.5kg, while otters average 7-12kg and can be even heavier. The river otter's eyes and ears are located high on its head for surface swimming. Most species have long, cylindrical bodies and short legs. In 2013 a woman from Montana claimed she needed eight stitches to her head after being attacked by an otter while tubing on the Madison river. There is still hope that one day humans and Otters will be able to live in harmony. But what they lack in size they make up for in manual dexterity. hide. They catch prey with their teeth. Males are from 4.9 to 5.6 ft (1.5 to 1.7 m) and females from 3.3 to 4.9 ft (1 to 1.5 m). Giant river otters are very noisy animals that make a wide variety of noises. In order for them to survive all of this time, Otters … Females are smaller at 1-1.5m (3.3-4.9ft). There are 13 species of otters, in seven genera, according to Integrated Taxonomic Information System (ITIS). River otters range in size from about 87 to 153 cm (34-60 in.) 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. The spatial overlap of giant otters with human fishing sites is the most likely explanation for the positive association between these two variables and may account for the conflicts between this species and human activities that were observed in other areas (Gómez and Jorgenson, 1999, Recharte et al., 2008, Rosas-Ribeiro et al., 2012). Otter “Ears and nostrils close when underwater; whiskers aid in locating prey.” It can reach up to 1.7 m (5.6 ft). The North American river otter (Lontra canadensis) is a semiaquatic mammal in the weasel family.While it may simply be called the "river otter" in North America (to distinguish it from the sea otter) there are other river otter species throughout the world. The gait of sea otters on land is somewhat clumsy, but river otters can sprint short distances at high speed. Below is the generic otter-human size comparison. Top predators: Because of the size and the diet, Giant River Otters are top predators in the Amazon being the only competitors the black caiman, anacondas, or a jaguar. Suriname, Guyana and French Guiana are regarded by biologists as the last major giant river otter strongholds in the world. River otters have long, stiff and highly sensitive facial whiskers that aid in locating and capturing prey. And the giant river otters are the longest. 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