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North American river otters, like most predators, prey upon the most readily accessible species. Fish is a favored food among the otters, but they also consume various amphibians (such as salamanders and frogs), freshwater clams, mussels, snails, small turtles and crayfish. The most common fish consumed are perch, suckers, and catfish.
7 janv. 2023 · Key Takeaways. River otters have several predators, including alligators, bobcats, coyotes, and large birds of prey. Otters have developed various adaptations to avoid predation, such as their excellent swimming and diving abilities, as well as their ability to camouflage in their surroundings.
River otter dens are along the water in abandoned burrows or empty hollows. The dens have entrances underwater so they can be easily accessed from the water. Bobcats, alligators, coyotes, raptors, and other large predators will sometimes prey on North American river otters.
Otters, being semi-aquatic mammals, face predation risks from both marine predators and river predators. These predators play a significant role in shaping otter populations and maintaining ecosystem balance.
North American river otters are likely the most numerous of the otter species. Because they are at the top of their food chain, they have few predators. However, water pollution, uncontrolled trapping and severe habitat loss have reduced the number of river otters.
17 juin 2024 · The observations presented herein show that river otters, as boundary-spanning predators, can drive cross-ecosystem nutrient subsidies by provisioning prey carcasses derived from aquatic ecosystems to terrestrial scavengers.
predators: big cats, alligators, coyotes, dogs, wolves. threats: pollution, poaching, habitat loss, accidental trapping, road kill. size: 100-153 cm (body 66-107 cm; tail 31-46 cm) weight: 8-11 kg. The North American river otter is a large otter whose story is a success.
