Those dogs can rip your throat out. But you would have to be lying on the floor and it would take the dog a few weeks.
My S-I-L is a firefighter who went on a recovery call. A man apparently died alone, and had no friends and family to check on him. After about a week, neighbors complained of a foul odor, and police came to do a welfare check.
The man had a pet chihuahua that survived by eating the man’s eyeballs.