What animals have bitten you hard enough to draw blood?

The dog I had when I was a kid. She stole my chocolate chip cookie and my parents had told me if she ate chocolate she would die. (Dogs can get really sick from chocolate but they won't die from eating a chocolate chip cookie) well...I didn't know any better at the time so I freaked out and tried to ge the cookie back. Big mistake. She bit my hand. Needless to say she ate the cookie and I never tried to take food from her again!