1.It lives in water. It has legs, arms and a tail. It is a crocodile
2. It does not live in the water. It can be different colours. It is a gecko
3. It live in the water. It has a tail, but it does not have any arms or legs. It is a fish or a snake
4. It can swim in water and walk on the land. It has four legs. It is a crocodile