The Peryton is a strange chimerical creature combining the wings, body, and legs of a large bird with the head, neck, and antlers of a deer or stag. Females are as large as males but have less impressive antlers, though they inflict the same damage as those of the males. They are found mostly in high mountainous regions.

Perytons are omnivorous with certain special dietary requirements. Specifically, both male and female perytons must dine on a heart before becoming fertile; they may share one heart, or each may acquire its own heart before seeking a mate.

A peryton receives a bonus of +2 on the attack roll when striking with its antlers. Though they have claws, they do not apparently choose to use them in combat. They are immune to non-magical weapons, as indicated above.

Perytons are intelligent, and speak their own language. They have a 65% chance of knowing the languages of one or more monster types found in the area of their lair, but rarely if ever speak Common or the languages of any demi-human races.