The Gorgon(Femina fremitas.) is one of the most widespread beasts.
They are 6 feet tall and have a 12 foot wingspan. They dwell in caves or abandoned huts and hypnotise their prey before incapacitating them with their paralysing venom. If you study them, carry a mirror at all times. This will make their hypnosis useless. Perseus killed one named Medusa on a quest, details of which can be found in Mythology.