Herbivores are the organisms which consume only photosynthesizing bacteria, plants and algae. They obtain energy only from eating plants. Some parts of plants are also eaten by omnivores. Omnivore generally eats vegetables which are produced by fruit-bearing plants. Herbivores are having special kind of digestive systems which help them to digest all kinds of grasses and plants. With the seasons, the diet of herbivorous animals varies. Some seasons are hot and some are cold, in the temperate zones of the Earth that’s why at different times of the year different plants are available. There is a cyclic relationship between plants and herbivores. Cow, Goat, Horses, Deer and Rhinoceros are the examples of herbivores.