Otters (scientific name: Lutra lutra), also known as river otters, are carnivores that live in freshwater and saltwater environments and belong to the family Mustelidae. They are distributed in various waters of Eurasia, including rivers, lakes, swamps, etc.
The body of an otter is about 60-100 cm long and weighs about 5-15 kg. Their hair is dense and soft, usually brown or gray-brown, with obvious white throat and chest markings. The front paws of otters have obvious intercalary membranes that help them swim and dive. In addition, they have a special feature that compared with other mammals, otters have a very high metabolic rate and need to eat continuously to maintain body temperature.
Otters are semi-aquatic animals that are good at swimming and diving. They can chase and prey on fish, crustaceans and mollusks in the water. They also dig holes on the shore to build nests and cover them with branches, grass and other debris as habitats. Due to their high requirements for water quality, otters tend to only appear in relatively clean waters and have difficulty surviving in polluted waters.
In the past few centuries, due to excessive hunting, poisoning and habitat destruction by humans, the number of otters has dropped sharply and has been listed as an endangered species. But now, under the protection of governments and environmental organizations, the number of otters has recovered.
animal tags：
you may also like
There are many types of birds with blue eggs. Here are some common birds with blue eggs: 1. Bluebird: The bluebird is a small songbird. The male bird’s back and head are blue, while the female bird is darker. Their eggs are usually light blue in color....
Egrets are large waterbirds belonging to the family Heronidae. They are usually characterized by their long necks, long legs, and white feathers. The general name of egret includes multiple species. The following is a detailed introduction to some common egret species: Great Egret...
Cat ownership will not completely eliminate cockroaches, but cats may play a role in controlling cockroach populations. Here are some possible reasons: 1. Cat’s predatory instinct: Cats are natural hunters and they have the instinct to chase and catch small animals. When...
Animal tails play different roles in different species. Some common functions are as follows:1. Balance: Many animals such as monkeys, squirrels, geckos, etc. use their tails to maintain balance, especially when jumping, climbing or running.2. Digging: Some animals such as gophers, hedgehogs, sparro...
No, small crabs cannot stay in the water forever. While crabs are aquatic animals and many species live in or near water, they still need access to air to breathe. Most crabs have gills that extract oxygen from water, but they also possess specialized structures known as branchial chambers or gill c...
Determining the gender of a Brontosaurus is not easy. However, there are some characteristics that can be used to distinguish the sex of a Brontosaurus, and here are some common methods: 1. Brontosaurus size: Generally speaking, male Brontosaurus is usually larger and sto...
Some animals can easily climb onto rooftops, especially in urban and suburban areas. Some common roof-climbing animals include: Cats: Cats are excellent climbers and can easily climb from the ground to the roof of a house. Squirrels: Squirrels are ano...
The Golden Orb Weaver Spider is a beautiful and unique spider. Here are some tips on how to raise it:1. Fish tank selection: Choose a fish tank or glass container of appropriate size to raise the golden spider. Make sure the container has enough space for the spider to move around and has proper ven...
Email: jsset#163.com (change # to @) Please indicate your purpose of visit! Guangdong ICP No. 2022053326 XML| map| Chinese
