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Otters are carnivorous mammals in the subfamily Lutrinae. The 13 extant otter species are all semiaquatic , aquatic , or marine . Lutrinae is a branch of the Mustelidae family , which includes weasels , badgers , mink , and wolverines , among other animals.
However, river otters will prey on trout, pike, walleye (Sander vitreus vitreus), salmon (Oncorhynchus spp.), and other game fish during spawning. [32] Otters have been found to consume invasive Asian carp. [52] Adult North American river otters are capable of consuming 1 to 1.5 kilograms (2.2 to 3.3 lb) of fish per day. [35]
It primarily eats fish, typically less than 20 cm (7.9 in) in length, but also frogs and small crustaceans, especially when fish is in short supply. [6] The female bears a litter of up to three young after a gestation period around two months. The young are born blind and helpless, and the mother cares for them for almost a year. [5] [3]
The world's largest frog is the goliath frog of West Africa—it can grow to 15 inches (38 centimeters) and weigh up to 7 pounds (3.2 kilograms). One of the smallest is the Cuban tree toad, which ...
However, during the winter and in colder environments, fish consumption is significantly lower and the otters use other resources for their food supply. Their diets can consist of amphibians (mainly frogs and pond turtles), bird predation (mainly anserine species), small rodents , and invertebrates such as water beetles, snails, and crayfish.
Otters are social animals, and in the wild, live together in groups as big as 10 to 100 individuals. A popular animal exhibit at the zoo, people love to watch these aquatic mammals swim,
When diving under water, they undulate their bodies and tails. Captive otters swim at speeds of 0.7–1.2 m/s (2.3–3.9 ft/s). [14] Observations of wild Asian small-clawed otters revealed that they smear their spraint at latrine sites, using their hind feet and tails. Large groups smeared more than groups of three or fewer animals.
The internet was aghast that two Asian Small-Clawed Otters had to wait even for a second to get their breakfast. The animals themselves were steamed at their caretaker at the Wild Animal Safari in ...