One of our dogs bit me by accident once. I think she was just waving around and her tooth accidentally caught me. To be honest, I did not even realise what happened until afterwards. She did once bite my dad when he was walking her but that was also somewhat accidental. This particular dog really did not like other dogs at all. She saw another one on the other side of the road. As soon as she saw it she went crazy and just tried to bite anything near her. It just so happened that my dad's ankle was in front of her so she bit that. I think he still has a scar from it! She never liked other dogs and would always try to attack them if she saw them. We don't really know why she was like that. Perhaps she thought that she was a person rather than a dog. Our other dog was nothing like that and never bit anyone. She was very gentle. We did have one dog who would bite but only if you annoyed him. He once bit my mum when she went under the kitchen table to hit him for snatching something from the table.