I have volunteered at a shelter 30 minutes away and now volunteer at the one locally. I have never been bit seriously by a dog, ever. The worst one was just a puppy nip, but it wasn't serious. I have fallen in love with all the pitties there and of course every dog and cat there. how could you not? of course there's some I get a little bit frusturated with as puppies jumping on you..but they don't know any better and I wouldn't hate them just because they jump on you. they just require special attention and a little love and care goes a long way imo.
there's a beautiful shepherd mix pup at the shelter named Kubota and I doubt he has had any special attention in his life. He has real insecurity issues. He is constantly jumping on you to feel safe and to feel secure. I don't mind it, because he requires special attention and is just a total and complete love bug.