Not one of my dogs, but my dog's mother bit me in the face, requiring 35 stitches.
I blame it entirely on myself and the owner of the dog and our total stupidity of "forgetting" what breed we were dealing with.
Our breeder had sold a ***** to a local guy with breeding rights. I had been on a waiting list for one of this breeder's puppies for 3 years. (They don't breed that often, it is a rare breed, and their puppies are much sought after.) It was fate that the litter with an available puppy happened to be local and not in the breeder's home state. So, when the puppies were 2 days old, the breeder told me to go see them.
I had visited the ***** before and she was wonderful with a great temperament - one of the reasons this breeder is so sought after is that her line of dogs have very stable temperaments in a breed where the dogs can be rather "tough."
I would need to write a novel to explain the way this breed thinks (not a typical "want to please your owner" breed) to then explain why what we did was so contradictory to the way the breed thinks and that we were being totally stupid. I walked into a house of a hormonal dog with a 2 day litter with a camera in my hand. Dog felt threatened, jumped up and grabbed my face and then dropped down. It was a warning bite - she could have ripped me apart if she wanted to. But one bite and she dropped down. Unfortunately for me, this breed has huge teeth bred into them to fight wolves and bears.
Off to the ER I go for 35 stitches. And yes, I did take one of her puppies who turned out to be the best dog we ever had. We just lost him not too long ago due to old age.
But our dog was a sweetheart and the mom was too, except for when she was a hormonal, protecting her litter dog. Although for both of us, it was a wakeup call to never again be lulled into forgetting what kind of dogs these are because they are 99.99% of the time the gentlest of all dogs. There is that .01% of the time that their true breed can come out
And I went on to get a second dog from the same breeder who is sitting at my feet, and am waiting for the next litter for my next puppy.