Everybody knows that Herbivores feed mostly on plants and products made from plants.

Today, vegetarian is the standard term commonly used to refer to a Herbivore. Vegetarians do not eat meat, or, in some cases, animal products.

There are also strict vegetarians, also known as vegans. They only eat vegetables and farinaceous foods, abstaining from such products of animal origin as eggs, milk, and sometimes even butter and honey.

This can be interesting: All humans are omnivores (species that have a diet composed of both plants and meat). Humans may consume meat and vegetables, while a herbivore will only consume vegetables. Vegetarians decide to abstain from eating any meat, however they CAN consume meat.

More Info: simple.wikipedia.org