Otter

Otters are playful, carnivorous mammals belonging to the subfamily Lutrinae. They are part of the larger Mustelidae family, which also includes weasels, badgers, mink, and wolverines. There are 14 different species of otters, all of which spend time both on land and in water. They have long, slim bodies, strong webbed feet for swimming, and thick fur that helps keep them warm and float in water.

Otters are known for their playful behavior, often sliding into water on natural slopes or playing with stones and other objects. They mainly eat fish, but depending on the species, their diet may also include frogs, birds, or shellfish. Otters have a gestation period of about 60 to 86 days, and their young stay with their family for about a year. These animals can live up to 16 years in the wild.

Throughout history, otters have had different relationships with humans. They were sometimes hunted for their valuable pelts, and in some places, like southern Bangladesh, they have been used in fishing practices. While attacks on humans are rare and usually happen only when otters feel threatened, these animals have also inspired many stories and beliefs. In cultures such as Norse mythology and Native American totems, otters symbolize various qualities, and in Asian folklore, they are sometimes thought to have the ability to change shape.

Etymology

The word otter comes from an old word used by people who spoke Old English, called otor or oter. Many languages that share a common history, called Indo-European languages, have similar words. All of these words come from an even older shared word, *wódr̥, which is related to the English word "water."

Terminology

An otter's den is called a holt, or couch. Male otters are called dogs or boars; females are called bitches or sows; and their babies are called pups or cubs. Groups of otters can be called a bevy, family, lodge, or romp, and when they are in water, they can be called a raft.

Otters leave behind special droppings called spraints, which can often be identified by their unique smell.

Life cycle

The gestation period in otters lasts about 60 to 86 days. After birth, the mother and sometimes older siblings care for the newborn pup. Female otters reach sexual maturity at around two years old, while males reach it at about three years. Otters build their homes, called holts, under tree roots or rocky cairns, often lined with moss and grass.

After about one month, the pup can leave the holt, and after two months, it can swim. Pups stay with their family for around one year. Otters can live up to 16 years and enjoy playing in the water with their young. Their main food is fish, but they may also eat eels, frogs, and birds.

Description

Otters have long, slim bodies and short limbs. They are great swimmers thanks to their webbed feet and can hold their breath underwater for a long time. Most otters have sharp claws and long, muscular tails, except for the sea otter. They range in size from about 0.6 meters to 1.8 meters long.

Otters have very soft fur under a layer of long guard hairs that helps keep them dry and warm in the water. Some otters, like the Eurasian otter and sea otter, need to eat a lot — up to 25% of their body weight each day — to stay warm, especially in cold water. Most otters hunt for food for several hours every day.

Feeding

Otters mainly eat fish, but they also enjoy eating frogs, crayfish, and crabs. Some otters are very good at opening shellfish, while others might eat small mammals or birds if that’s what’s available. Sea otters hunt clams, sea urchins, and other shelled animals. They are special because they can use stones to crack open shellfish on their bellies, a skill that young otters need to learn.

Otters are active hunters, chasing their food in the water or looking for it in river, lake, or sea beds. Most otters live near water, but river otters usually go into the water only to hunt or swim. They spend a lot of time on land to keep their fur from getting too wet. Sea otters, however, live in the ocean most of the time.

Behaviour

Otters are playful animals that enjoy doing fun things, like making waterslides and sliding down them into the water. They also like to find and play with small stones for fun. In 1990, someone saw an otter belly-sliding in Singapore, probably just for amusement.

Otters have different social habits depending on the species. Some otters like to be alone most of the time, while others prefer to live in groups, and in a few species, these groups can get fairly large.

Species

Otters are part of the Lutrinae subfamily, which belongs to the Mustelidae family. This family also includes weasels, badgers, mink, and wolverines. There are 14 otter species alive today, and they all live near water, in both freshwater and marine environments.

In the past, many other otter species existed but are now extinct. These ancient otters lived in places like Corsica, Malta, Japan, and many parts of Europe, Asia, and Africa, from times as far back as the Late Miocene up until the Pleistocene period. One example is the Japanese otter (Lutra nippon), which lived in Japan but disappeared around 1979.

Relation with humans

Otters have been hunted for their pelts since at least the 1700s. People have used otter fur to make warm clothes and accessories, like hats and belts, for centuries. In some places, like China, only very important people wore clothes made from otter fur.

Otters have also helped people with fishing. In parts of Bangladesh, fishermen have kept smooth-coated otters to help chase fish into their nets. This tradition has been passed down through families for many years.

In stories and myths from many cultures, otters play special roles. In Norse mythology, an otter named Ótr is part of an important tale. In Irish mythology, an otter accompanies a magical character on her journeys. Some Native American cultures see otters as important spirit animals. These stories show how people have valued otters throughout history.

In Japanese folklore, otters are known to trick people, much like clever animals in other tales. They are said to change shapes, sometimes appearing as beautiful people or other forms to amuse or confuse humans.