Frogs, toads, newts and salamanders are amphibians. All amphibians have thin skins which are usually wet and slimy. They have two pairs of legs. The toes of most amphibians have webs of skin between them. This allows them to swim well in water. The body of a frog or toad is made up of two parts, head and the trunk. There is no neck or tail. Adult newts and salamanders have tails. Frogs and toads are important to human beings as they feed on insects. Some of these insects may be harmful to us. Toads produce poison from the skin for protection. Wash your hands after touching a toad. Reptiles live mainly on land but some live in water. They breathe through lungs and have dry scaly skins. Reptiles which live in water come to the water surface to breathe. Reptiles lay eggs with hard shells. Lizards, snakes and tortoises are reptiles which live mainly on land while crocodiles, alligators and turtles live in water. The body of a reptile such as the crocodile and lizard is made up of the head, the trunk and the tail.