GUESS THEIR NAMES II

It isn't an insect. It's a reptile. It lives in forests, grasslands, caves, jungles. It lives everywhere. It hasn't got hands or legs and it is very long. It has got a big mouth but it has got small eyes. It can't fly and it can swim. It hasn't got horns but it has got two long teeth. It can't jump. It eats mice, rats and small birds. It has got different and beautiful colours: red, whit, black, green... What is it?

Sergi,12 years.

It isn't a bird. It is a mammal. It can swim and walk but it can't fly and talk. It lives in Africa. It lives in rivers and lakes. It eats vegetables and sometimes fruits. It's a very good swimmer but it is a very bad runner. It has got a short tail and it is very fat. Its mouth is enormous. At the top of its head there are two small and round ears. Its colour is grey. What is it?

Carlos, 12 years.