I had to have my L rear leg amputated because I was missing my foot/pad when I arrived from AL as a little puppy.  I was just returned at 10 months old because the little humans in my home keep dropping yummy food stuff and I want it all for myself and so I bite the two smaller dogs I live with if they also try to get the food being dropped.  I now live on a farm and get along with the resident 5 dogs, a kitten and 20 chickens.  I get around fine on my three legs.