Musk Deer skull: You're not seeing things, and it hasn't been photoshopped. That really is a picture of a deer with fangs--or more correctly tusks. This is the skull of a musk deer. Musk deer aren't considered "true" deer as they belong to the family Moschidae, and true deer to the family Cervidae. Among the Cervidae, there are three species with tusks; the muntjac, the tufted deer and the Chinese water deer. And sometimes even white-tailed deer sport a set of nasty canines.