The alphyn is a monster with a body similar to that of a tyger; its other characteristics vary, but it is most commonly shown with eagle’s forelegs and a knotted tail. It was used as a badge by the Lords de la Warre, c.1476 [Dennys 146]. Etymological evidence suggests that the alphyn and the enfield are both variants of the same non-heraldic monster.
The alphyn does not seem to have a default posture; the illustration shows an alphyn passant.
Angelo di Antonio Machiavelli bears: Quarterly sable and azure, an alphyn passant argent.
Alyson Throckmorton bears: Lozengy vert and Or, an alphyn passant purpure.
Dunstan Godricson bears: Per fess and per chevron throughout gules and argent, three alphyns passant argent.