Can you eat horse

Yes you can (but it's terribly gross and mean to man's second best friend) and many cultures do.

Anwser:

Horse meat is available in most American states and many countries around the world. For some reason many people hold horses to be something special (you might say horses are a sacred cow) and tend to be disgusted by the potential of eating one. The meat itself is tender and sweet with a low amount of fat. It is more like moose than beef.