* Otters are semi-aquatic mammals with long, streamlined bodies and short legs.
* Their fur is thick and water-resistant, and it comes in a variety of colors, including brown, black, and gray.
* Otters have long tails that help them swim and balance.
* Their heads are broad and flat, with small ears and eyes.
* Otters have webbed feet that help them swim.
Size
* Otters vary in size depending on the species.
* The smallest otter is the Asian small-clawed otter, which weighs only about 1 pound.
* The largest otter is the giant otter, which can weigh up to 70 pounds.
Habitat
* Otters live in a variety of habitats, including rivers, lakes, streams, and estuaries.
* They are found in all parts of the world except for Australia and Antarctica.
Diet
* Otters are carnivores and eat a variety of animals, including fish, shellfish, frogs, and small mammals.
* They use their long claws to catch and hold their prey.
Behavior
* Otters are social animals and live in groups called "clans."
* They are territorial and defend their territory from other otters.
* Otters are very playful and spend much of their time swimming, diving, and sliding on their bellies.
* They are also very vocal and communicate with each other using a variety of sounds, including chirps, whistles, and grunts.
Reproduction
* Otters breed once or twice a year.
* Females give birth to litters of 1-5 pups.
* The pups are born blind and helpless and are cared for by their mother until they are about 1 year old.
Lifespan
* Otters can live for up to 10 years in the wild.