Hircocervus

The hircocervus (Latin:hircus, "billy goat" + cervus, "stag") or tragelaph (Greek:τράγος, tragos, "billy goat" + έλαφος, elaphos, "stag"), also known as a goat-stag or horse-stag, was a legendary creature imagined to be half-goat, half-stag.

The creature is now best-known through The Trusty Servant painting in Winchester College, representing the ideal virtues of its alumni.