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North American river otters characteristically approach within a few feet of a boat or a person on shore due to their near-sightedness, a consequence of vision adapted for underwater sight. North American river otters have a transparent inner eyelid (called a nictitating membrane) to protect their eyes while swimming. [10] [23] [24]
For most otters, fish is the staple of their diet. This is often supplemented by frogs, crayfish and crabs. [12] Some otters are experts at opening shellfish, and others will feed on available small mammals or birds. Prey-dependence leaves otters very vulnerable to prey depletion. Sea otters are hunters of clams, sea urchins and other shelled ...
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 ...
What Do Asian Small-Clawed Otters Eat? ... Or they might possibly chow down on fish, frogs, insects, bird eggs, rodents, snakes, worms, and small aquatic animals. It depends!
Image credits: ghgjgmhngbfghc There are over 7,000 frog and toad species on planet Earth, and they have been around for more than 200 million years, at least as long as the dinosaurs!. The world's ...
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]
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,
Fish and frogs perish in such streams, yet muskrats may thrive and occupy the wetlands. Muskrats also benefit from human persecution of some of their predators. [7] The muskrat is classed as a "prohibited new organism" under New Zealand's Hazardous Substances and New Organisms Act 1996, preventing it from being imported into the country. [21]