I've had a lot of reptiles and as a result, a lot of reptile bites.

Almost every time I've been bit it was an accident or a response, and as soon as the reptile realized it had human skin in it's mouth it would release. Even herbivore iguanas have a lot of pretty sharp teeth and I've had some unique looking bite marks, but they almost never bite intentionally.

Parrots meanwhile... they are evil incarnate, at least to me. I've never met a parrot that didn't bite me hard enough to let me know it could easily amputate parts of my body if it so chose. Meanwhile I see them loving and cuddling other people, people who say things like "He's really very loving, he never bites anyone, he's perfectly safe to pet!"