One deer eating grass while other deer resting peacefully.

One deer eating grass while other deer resting peacefully.

White-tailed deer do eat grass, but they do not eat a whole lot of it. Contrary to popular belief, deer consume only a small quantities of grass and usually only when it is young and tender. In general, grass makes up less than 10% of a deer's annual diet. Forbs and browse make up the majority of whitetail food.