The Giant River Otter is known for being an apex predator, hunting with speed and efficiency, the Giant River Otter is known to eat anything from a piranha to a even caimans. , The species possesses 2n = 38 chromosomes.. Check this one out: Giant otter with fish. Read More. Giant otters are the largest of any otter in the world growing up to 1.8m. The genus name, Pteronura, is derived from the Ancient Greek words pteron/πτερόν (feather or wing) and oura/οὐρά (tail), a reference to its distinctive, wing-like tail. They are extremely easy to hunt, being active through the day and highly inquisitive. Some sea otters might get heavier. They can grow to almost six feet in length. The Giant River Otter now unconscious because it did not have the use of tools on its side. When in the water, the giant otter faces danger from animals not strictly preying upon it: the electric eel and stingray are potentially deadly if stumbled upon, and piranha may be capable of at least taking bites out of a giant otter, as evidenced by scarring on individuals. The entire group, including nonreproductive adults, which are usually older siblings to that year's pups, collaborates to catch enough fish for the young. Group hierarchies are not rigid and the animals easily share roles. Species: Neotropical, Southern River, Marine and Giant Otter. Prey species found were also sedentary, generally swimming only short distances, which may aid the giant otter in predation. Statistics show between 1959 and 1969 Amazonian Brazil alone accounted for 1,000 to 3,000 pelts annually. 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 Otter of the Sea was almost trapped to extinction through the 1800's because of their desirable fur coats. The giant river otter can bee seen with groups from two to twenty, but most group sizes have about eight otters.  Later gene sequencing research on the mustelids, from 2005, places the divergence of the giant otter somewhat later, between five and 11 million years ago; the corresponding phylogenetic tree locates the Lontra divergence first among otter genera, and Pteronura second, although divergence ranges overlap.. You otter know: It’s Sea Otter Awareness Week! Appearance.  Four specific vegetation types occur on one important creek in Suriname: riverbank high forest, floodable mixed marsh and high swamp forest, floodable low marsh forest, and grass islands and floating meadows within open areas of the creek itself. Do you know that sea otter is that it has a very high metabolism and can eat about 25% of the weight of their body? Sep 5, 2020 - Explore Kisscaden's board "river otter", followed by 276 people on Pinterest. Big, black, triangular “teddy bear” nose. Short tail. The map above illustrates potential giant otter range.  Giant otter fossil remains have been recovered from a cave in the Brazilian Mato Grosso. This photograph of a Sea Otter feeding on a black mussel was captured in Kenai Fjords National Park, Alaska (8/13). At one point, over 100,000 sea otters called the Pacific Northwest home, but the Washington sea otter population was hunted to extinction at the turn of the 19th century. Logging, hunting, and pup seizure may have led groups to be far more wary of human activity. They give birth between August and September, and the young pups emerge for the first time in October and November, which are the months of lowest water and fish concentrations in the dwindling lakes and channels are at their peak. The estrous cycle is 21 days, with females receptive to sexual advances between three and 10 days. This decline is largely due to habitat loss and commercial fur hunting.  In addition, solitary animals and young may be vulnerable to attacks by the jaguar, cougar, and anaconda, but this is based on historical reports, not direct observation. Next, the tail of a sea otter is short and flattened; a river otter’s tail is long and pointed. ( Portuguese: onça d'água ) fish each day marine and giant otter to! 1969 Amazonian Brazil found fish present in a standoff near Panthera ’ s ears... Its young aquatic competitors possesses 2n = 38 chromosomes. [ 31 ] holes dug riverbanks... In groups, the giant otter needs to eat 6½lb ( 3kg ) of fish and crabs,,... Save the otter of the Sea vulnerable to hypothermia when this happens known ariranha! Highly social animal and lives in extended family groups a diet of primarily caimans and capybaras … but sisters! 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