The modern-day unicorn is depicted as a white horse with a long spiraled golden or white horn coming from its forehead. This has not always been so. In medieval times, the unicorn was considered to be the size of a donkey or goat. It was white, but had the head of a deer, the body of a horse, the tail of a lion, the beard of a goat and cloven hooves. It was a symbol of purity and faithfulness and was thought to be untamable.