I've only been bitten by one dog.

A Shiba Inu.

Once was while playing, but left a little scar on my forehead, and the other was when we were out walking and some kids were coming along. He doesn't particularly like kids, so to avoid the whole, "can I pet your dog?", "He's so cute and fluffy" scenario, I picked him up. He proceeded to chomp down on my shoulder pretty hard.

I still love the breed, and the particular little dog who did bite me.