Ungulate topic

Ungulates (meaning roughly "being hoofed" or "hoofed animal") are several groups of mammals most of which use the tips of their toes, usually hoofed, to sustain their whole body weight while moving. They make up several orders of mammals, of which six to eight survive. There is some dispute as to whether Ungulata are a cladistic (evolution-based) group, or merely a phenetic group (similar, but not necessarily related), because not all ungulates appear as closely related as once believed.... full article at wikipedia