bird
cats
Dinky
Familiar
They are known as a Familiar.
Probably the first and most most famous Witch's familiar is the cat.
A witch's familiar is believed to be a spiritual being, often an animal. The familiar was meant to help the witch perform her magic.
The cat family
Most likely, the first (and most well-known) familiar would be a cat, but really any animal could be a familiar. During the Burning Times, any animal that was commonly seen with the "witch" could be a familiar, or any animal that seemed to be doing "suspicious" things- listening to a conversation, say, or perhaps a dog that bit at a townsperson. Also, if an animal was injured (say, it's a cat that got caught in a trap) and then the "witch" turned up with an unexplained injury, that was supposed to be a clear sign of witchcraft, and a sign that the witch was using the familiar to do that witchcraft.
i suppose any animal, because an animal would be defenseless against a demon.
A familiar is most commonly an animal that helps you on your magical journeys. They help you find items, help you cast spells, are good friends, and so much more!
Sometimes, she gives good rewards. You have to factor in how cheap the items she wants are, then how much the reward is.
A familiar (and this could be any animal, not just a bird).