Not many people (0) have seen an otter. These animals live (28) near rivers and make their homes from samall pieces of wood. They usually come (29) out of their homes at night. Otter are very good in the water and can swim at more than 10 kilometres (30) an hour. They have thck brown hair and this (31) keeps them warm in the water. An otter can close (32) its ears and nose. This means otters can stay under water (33) for several minutes.Twenty years ago, there were (34) few otters in Great Britain. The water in the rivers was so dity that many fish and insects died and the otter couldn’t find anything to eat. But today there is lots of food for them (35) because the rivers are clean
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