The horse was called a Eohippus when its feet had a different form.
== Etymology ==The word "foot", in the sense of meaning the "terminal part of the leg of a vertebrate animal" comes from "Old English fot "foot," from Proto-Germanic *fot (source also of Old Frisian fot, Old Saxon fot, Old Norse fotr, Danish fod, Swedish fot, Dutch voet, Old High German fuoz, German Fu, Gothic fotus "foot"), from PIE root *ped- "foot"
 The popliteus is also part of this group, but, with its oblique course across the back of the knee, does not act on the foot

