First Gypsy, our 7 lb. Chihuahua mix, got jumped by some of the other canines. It happens. Usually there's a lot of noise, hair pulling, and pinching, and the abused ends up none the worse for wear. However, Maggie the long-haired Dachshund mix is, at 17 lb.s, too big to play this "game" and too excitable to understand that she's not supposed to actually BITE the smaller dog. (But Maggie thinks it's fun...)
So, I've been tending Gypsy's injuries (she's almost back to full health), and trying to teach Maggie that Gypsy is NOT a chew toy. To be continued.