Kawauso: River Otter

The scientific name of the locally extinct otter is Lutra lutra whiteleyi. Taxonomy is Animalia, Chordata,Vertebrata, Mammalia, Carnivora. It inhabits Australia, waterside and the sea of a whole world except New Zealand. It is good at swimming and adapts myself to life in the water. It is an extinct species in the wild in Kochi. But it can be seen in Wanpak Kochi.

It lives in a rocky cavern and Tsuchiana of the bank of a river and the shore, the bush of the tree and is active in the daytime in the night. It is active underwater, but it sometimes steps ashore and goes several kilometers go over the hill and can move, but far-off do not need to leave the land like a sea-otter and act mainly along a river and the shore.

It is said that the action skill amounts to 10-20 kilometers in the European example considerably widely along a river and the shore. It seems that it can change a habitation place seasonally.

As for the color of the body, the top surface of the body is blackish brown, and the lower part is slightly bright brown. The limbs are short in a long torso, and, as for the tail, a basal part is big, and a border with the trunk is indistinct, and the leader is slightly flat. As for the head length for 60-85 centimeters, the Japanese blue magpie, 30-50 centimeters, the weight are approximately 4-10kg.

The food is fish, lobster, crabs, but it is said that also will mouse, eat rabbit, bird, frog, insect, snails.

It is the of the phlegmatic temperament near a nest, and there is a thing marking it. While the feces are cylindrical, and 3-10 centimeters are new, there is a unique strong bad smell.

The dental formula is 36 of them in total.

The figure is streamlined in total, and a web develops between fingers with the previous hind leg, and the head is flat, and the ear is small. It can close its ear and nostril underwater. The eyes stick to the upper end of the head and are suitable far looking at the outskirts while swimming. It grows thick hair on the top and bottom, and the hair is shiny. Drainage is good, and the particularly upper hair does not readily let water go through to lower hair. It Wiggles its and uses a tail and limbs skillfully and swim in the water lively.

Including the shells of a scale and the bone of the fish, a lobster and the crab, It become the shade like white when It dry. In the action area, the wreckage of the fish of the leftover is taken good other than feces. It can give the voice, but there is not much it.

It is one 1-4 product children for about 60 days in a gestational period. It matures in two years from 1 year and six month, and it is said to bear a child.


  1. I am sad when I read it. Because Kawauso is an extinct species in the wild in Kochi. I think It is important to protect nature.


  2. I had never seen Kwauso. Kawauso is smaller than I thinking.
    They are dangerous at extinction, so we cherish them.


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