AN ANIMAL'S body covering protects it from the heat and the cold, from too much or too little water and also from attack. Birds have feathers, reptiles and some species of fish have scales and mammals have fur. Body coverings also:
l Help to attract mates - in the form of bright colours and patterns.
l Warn that the animal is poisonous.
l Act as camouflage.
The New Children's Encyclopedia, Dorling Kindersley