When I was a kid the neighbor's Golden Retriever bit me hard while riding my go cart. I provoked it and deserved the bite.
I was also bitten by my pet iguana and parrots, both childhood pets. Both drew blood.
While in the Marine Corps I was bitten by a brown recluse - the swelling and pain was not fun and resulted in a trip to Balboa Naval Hospital.
My twins (boy-girl), now five, liked to bite when they were two. My wife and I, on separate occasions, bit them back and that stopped the biting.