herbivore

thumb|250px|A deer and two fawns feeding on foliage thumb|250px|A sawfly larva feeding on a leaf thumb|250px|Tracks made by terrestrial gastropods with their radulas, scraping [[green algae from a surface inside a greenhouse]]

A herbivore is an animal anatomically or physiologically evolved to feed on plants, especially upon vascular tissues such as foliage, fruits or seeds, as the main component of its diet. These more broadly also encompass animals that eat non-vascular autotrophs such as mosses, algae and lichens, but do not include those feeding on decomposed plant matters (i.e. detritivores) or macrofungi (i.e. fungivores).