(i) Herbivores: Animals which eat only plants or their parts like grass, leaves, frutis, etc are called herbivores. Cow, goat, dear, camel are examples of herbivorus animals.

(ii) Carnivores: Animals which eat only flesh of other animlas are called carnivores. Tiger and lion are examples of carnivores.

(iii) Omnivores: Animals that eat both plants and animals are known as omnivores. Example: Human being, crow, dog, sparrow, etc.