I recently found this fantastic website which lists descriptions and pictures of creatures by various medieval authors. It's unbelievable how Plinny the Elder was considered a reliable source in his time. Here's a description of a wolf by Plinny the Elder.
If a wolf looks at a man before the man sees the wolf, the man will temporarily be unable to speak. The wolves of cold regions are cruel and fierce, but those of Africa and Egypt are weak. It is not true that men can be turned into wolves and back into men (werewolves), though the Greeks believed it. If a wolf while eating looks away from its food, it forgets what it is eating and goes to look for something else. The tail of the wolf contains a love potion in a small tuft of hair, which is only effective if the tuft is plucked from the wolf while it is still alive; for this reason a wolf when caught will shed the tuft of hair, rendering it worthless. Wolves breed only twelve days of the year. It is considered to be the finest of omens if a wolf eats large mouthfuls of earth when barring the way of travellers who come upon it on their right hand side. And without further adieu, the link.
http://bestiary.ca/beasts/beastalphashort.htm
Am I have no memory? 
