Parasites, such as the larvae of flies and a variety of intestinal worms, also afflict the giant otter. Fish from the order Perciformes, particularly cichlids, were seen in 97% of scats, and Characiformes, such as characins, in 86%. To notify the family of their presence, otters sharply scream and emerge from the water. [39] One tentative theory for the development of sociality in mustelids is that locally abundant, but unpredictably dispersed, and prey causes groups to form. These otters are able to swim 330 feet (100 meters) in less than 30 seconds. Researchers emphasize that even between groups, conflict avoidance is generally adopted. [47] Females have a gestation period of 65 to 70 days, giving birth to one to five pups, with an average of two. Habitat degradation and loss is the greatest current threat. Cape clawless otters and Asian small clawed otters love frogs, crustaceans, crabs and … They give birth within these dens during the dry season. Fossils of a giant river otter dating back 3.5 Mya have been found in the US Midwest, however fossils of the modern river otter did not appear in North America until about 1.9 Mya. Young otters remain in the den for a month but grow up quickly. How Long Do Otters Live? Years ago, they lived in tropical forests and wetlands, but the presence of human beings has drastically changed this situation. Discover where otters live in the UK, how you can spot their signs, and where you can see them for yourself. [64], Even if without direct predation, the giant otter must still compete with other predators for food resources. Further Information on the Giant Otter: E-mail to add your Giant Otter related website. [61] Giant otters may adopt preferred locations perennially, often on high ground. [20][21] Early reports of skins and living animals suggested exceptionally large males of up to 2.4 m (7.9 ft); intensive hunting likely reduced the occurrence of such massive specimens. Giant otters regularly feed on piranha, and have also been known to take down alligators. These huge members of the weasel family swim by propelling themselves with their powerful tails and flexing their long bodies. [46] Pups open their eyes in their fourth week, begin walking in their fifth, and are able to swim confidently between 12 and 14 weeks old. It constructs extensive campsites close to feeding areas, clearing large amounts of vegetation. Fish are supplemented by crustaceans, snakes, and other river creatures. These otters do have sharp teeth and if you're keeping otters you should be aware these wild animals can become aggressive if stressed. [23] The fur is extremely dense, so much so that water cannot penetrate to the skin. [84] A Maxacali creation story suggests that the practice of otter fishing may have been prevalent in the past. Atypical of mustelids, the giant otter is a social species, with family groups typically supporting three to eight members. Yorkshire Wildlife Park is home to Mora and Alexandra, two female Giant Otters from Duisburg Zoo in Germany. Being carnivorous, otters feast on a variety of meats from the fish they catch, to crustaceans, mollusks, sea urchins, and amphibians. [41] While not rare among large predators in general, intraspecific aggression is uncommon among otter species; Ribas and Mourão suggest a correlation to the animal's sociability, which is also rare among other otters. It is the noisiest otter species, and distinct vocalizations have been documented that indicate alarm, aggression, and reassurance. In Cantão State Park, otters dig their reproductive dens on the shores of oxbow lakes starting around July, when waters are already quite low. In captivity, this may increase to 17, with an unconfirmed record of 19. In South America, the giant otter resides among hundreds of hungry caimans (a type of crocodilian related to alligators) without any issue. Within these seas, they are usually found in the vicinity of the shore (which is typically rocky). Other countries have taken a lead in designating protected areas in South America. Known throughout much of their range as 'river wolf', they are amongst South America's top carnivores. Hums and coos are more reassuring within the group. [37] In another instance in Brazil, a carcass was found with clear indications of violent assault by other otters, including bites to the snout and genitals, an attack pattern similar to that exhibited by captive animals. Males are between 1.5 and 1.7 m (4.9 and 5.6 ft) in length from head to tail and females between 1 and 1.5 m (3.3 and 4.9 ft). © Magic Bones/Getty Giant ottters are very sociable animals and often live in groups of up to 20 individuals. Form and function. Early documentation of skins and live animals suggest that they once grew up to 7.9 feet in length (2.4 m), but such large specimens ceased to exist when the giant otter population began to decline. In fact, he’ll usually live in a group with ten or more of his fellow otters. [71] Duplaix relates the story of an Arawak Indian who took two pups from their parents. )[71] The animal sometimes drowns in nets set across rivers and machete attacks by fishermen have been noted, according to Duplaix, but "tolerance is the rule" in Suriname. [27] Although generally peaceful, the species is territorial, and aggression has been observed between groups. The animal's well-muscled tail can add a further 70 cm (28 in) to the total body length. [12] Total population numbers are difficult to estimate. [52] It feeds mainly on fish, including cichlids, characins (such as piranha), and catfish. They come in many sizes. The species is territorial, with groups marking their ranges with latrines, gland secretions, and vocalizations. The giant otter's highly sensitive whiskers (vibrissae) allow the animal to track changes in water pressure and currents, which aids in detecting prey. Schoolchildren, however, had a more positive impression of the animal. This makes it easier for the adults to catch enough fish for the growing young, and for the pups to learn how to catch fish. [77] (One researcher has suggested the giant otter is hunted only in desperation due to its horrible taste. One report found between three and eight campsites, clustered around feeding areas. [16] (The North American river otter (Lontra canadensis) is the fourth Lontra member.) Let us know on the Wide Open Pets Facebook page! [4] Other sources have found greater intervals, with as long as 21 to 33 months suggested for otters in the wild. [5] In Spanish, river wolf (Spanish: lobo de río) and water dog (Spanish: perro de agua) are used occasionally (though the latter also refers to several different animals) and may have been more common in the reports of explorers in the 19th and early 20th centuries. Atypical of mustelids, the giant otter is a social species, with family groups typically supporting three to eight members. The giant otter is a large semi-aquatic mammal that lives in the Amazon River basin and in the Pantanal wetlands in South America. One report suggests maximum areas 28 m (92 ft) long and 15 m (49 ft) wide, well-marked by scent glands, urine, and feces to signal territory. Countries where giant otters live include Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Peru, Suriname and Venezuela. Most otters live in dens — built by other animals, such as beavers — that are dug into the ground that have many channels and dry inner chambers. The giant otters are carnivorous amphibian mammals, that belong to the Pteronura genus.In fact are the only otters of this genus, and are the longest member of the mustelid family to which also belong the water wolves.. [32] Duplaix identified nine distinct sounds, with further subdivisions possible, depending on context. When females leave, they tend to move much further away (60–90 km or 37–56 mi) than males (up to 30 km or 19 mi), which tend to move shorter distances. The giant otter is a highly social animal and lives in extended family groups. Search. The threat has been exacerbated by the otters' relative fearlessness and tendency to approach human beings. They live in still or slow moving fresh water rivers, lakes and creeks. The giant otter has the shortest fur of all otter species; it is typically chocolate brown, but may be reddish or fawn, and appears nearly black when wet. The species prefers freshwater rivers and streams, which are usually seasonally flooded, and may also take to freshwater lakes and springs. Their diet in the wild is crustaceans, mollusks, and small fish. The Amazon rainforest is where the Giant Otter lives; it is their habitat, their home. The smaller neotropical otter is far more shy, less noisy, and less social; at about a third the weight of the giant otter, it is more vulnerable to predation, hence, a lack of conspicuousness is to its advantage. Giant otters mate in the water and give birth to 2 or 3 pups in August to October. [64] One difference in behavior was seen in the country in 2002: the normally inquisitive giant otters showed "active avoidance behavior with visible panic" when boats appeared. Be advised that any attempt to poison an otter is considered illegal, and would cause … The giant otter has a handful of other names. Their main habitat is on the land near to water bodies. They have thick fur that caused them to be hunted to near extinction. The Giant otter, living in South America, and the largest of the otters in its total length, is the cousin of the sea and river otters in North America, Europe and Africa. Otters are real carnivores. Giant otters in the wild can eat caiman, piranhas, and anacondas. Giant Otters typically live in and along the Amazon River. [1] P. b. brasiliensis is distributed across the north of the giant otter range, including the Orinoco, Amazon, and Guianas river systems; to the south, P. b. paraguensis has been suggested in Paraguay, Uruguay, southern Brazil, and northern Argentina,[12] although it may be extinct in the last three of these four. [4] At Tierpark Hagenbeck in Germany, long-term pair bonding and individualized mate selection were seen, with copulation most frequently taking place in water. Giant River Otters are apex predators, partially due to these impenetrable family groups, and use 22 different vocalisations to communicate to one another. Group members share roles, structured around the dominant breeding pair. This is the smallest otter species being only about 11 lbs. [60] They clear significant amounts of vegetation while building their campsites. Sea otters live in the Pacific Ocean while giant otters live in the tropical rain forests of South America. It can grow up to 1.80 meters (six feet) in length and weigh more than 30 kilograms (70 pounds). An analysis of dry season range size for three otter groups in Ecuador found areas between 0.45 and 2.79 square kilometres (0.17 and 1.08 sq mi). Giant otters adopt communal latrines beside campsites, and dig dens with a handful of entrances, typically under root systems or fallen trees. On the one hand, adult males are between 5 and 6 feet long and weigh between 70 and 99 pounds and on the other, females measure between 5 and 5 1/2 feet in length and weigh between 48 and 58 pounds. The survival of the giant otter populations in the Guianas is essential to the survival of this endangered species in South America. [46] Study of captive specimens has found only males initiate copulation. Southern river otter – Is found in the marine and freshwater environments of southern Chile and Argentina. [67], The animal faces a variety of critical threats. The species was listed as endangered in 1999 and wild population estimates are typically below 5,000. [42][43] Within groups, the animals are extremely peaceful and cooperative. [15], An extinct genus, Satherium, is believed to be ancestral to the present species, having migrated to the New World during the Pliocene or early Pleistocene. Other threats to the giant otter include conflict with fishermen, who often view the species as a nuisance (see below). Logging, hunting, and pup seizure may have led groups to be far more wary of human activity. Please do not trap live otters and then drown them, as it is considered illegal in many states and is a painful way for any animal to die, which can last anywhere up to eight minutes. [11], The otters form the subfamily Lutrinae within the mustelids and the giant otter is the only member of the genus Pteronura. )[36] The groups are strongly cohesive: the otters sleep, play, travel, and feed together. Otters living in zoos and aquariums are likely to live far past their average life span to almost double or triple years. The three Guianas remain the last stronghold of giant otters in South America, with pristine giant otter habitat on some rivers and good giant otter densities overall—still, but for how long? [34] Each family of otters was shown to have its own unique audio signature.[35]. The giant otter or giant river otter (Pteronura brasiliensis) is a South American carnivorous mammal. The giant otter is … Giant otters live in family groups which include monogamous parents and the offspring from several breeding seasons. [8][9] The genus name, Pteronura, is derived from the Ancient Greek words pteron/πτερόν (feather or wing) and oura/οὐρά (tail),[10] a reference to its distinctive, wing-like tail. Prey chase is rapid and tumultuous, with lunges and twists through the shallows and few missed targets. These animals are known to go head-to-head with some of the world's most powerful animals, - such as Jaguars, crocodiles and anacondas. They tend to set up their nests in the banks of slow moving rivers and lakes as this is safer for their young. [23][29], The species possesses 2n = 38 chromosomes.[30]. Check this one out: Giant otter with fish. Giant otters produce 9 different vocalizations and are very loud. This gregarious animal grows to a length of up to 1.8 m (5.9 ft), and is more aquatic than most other otters. [72][73] Water pollution from mining, fossil fuel extraction, and agriculture is a serious danger; concentrations of pesticides and other chemicals are magnified at each step in the food chain, and can poison top predators such as the giant otter. These large otters are extremely social animals. The main difference between the giant otter and the other relatives is its flattened tail. They noted that the species may be the basal divergence among the otters or fall outside of them altogether, having split even before other mustelids, such as the ermine, polecat, and mink. More recently, habitat destruction and degradation have become the principal dangers, and a further reduction of 50% is expected in giant otter numbers within the 20 years after 2004 (about the span of three generations of giant otters). No institution, for example, has successfully raised giant otter cubs unless parents were provided sufficient privacy measures; the stress caused by human visual and acoustic interference can lead to neglect, abuse and infanticide, as well as decreased lactation. The giant otter (Pteronura brasiliensis) inhabits South America, especially the Amazon river basin, but is becoming increasingly rare due to poaching, habitat loss, and the use of mercury and other toxins in illegal alluvial gold mining. This South American otter is the world's largest, at some 6 feet long. They hunt alone or in groups, sometimes using coordinated efforts, and must be successful often to meet their daily intake quota. [82] A Ticuna legend has it that the giant otter exchanged places with the jaguar: the story says jaguar formerly lived in the water and the giant otter came to the land only to eat. [22] Giant otters live in tight knit family groups that are dominated by a breeding pair, the rest of the group consists of their offspring up until the age of reproduction. The giant otter is the longest species among mustelids although not the heaviest. These semi-aquatic creatures live up to their name as the largest otters on earth – they weigh up to 70 pounds and can grow to 6ft long. Whistles may be used as advance warning of nonhostile intent between groups, although evidence is limited. [65] While the two species are sympatric (with overlapping ranges) during certain seasons, there appeared to be no serious conflict. Largely as a result of hunting the Giant Otter is now classed as seriously endangered in Colombia, Brazil, Bolivia, Ecuador, Peru, Paraguay and Venezuela. The clawless otter is a specimen that appears in Africa and is one of the smallest otter species. [33] An analysis published in 2014 cataloged 22 distinct types of vocalization in adults and 11 in neonates. 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