Dogs running loose may have been having to fight for their lives, fight over food, or fight over territory. They would fight your dog if they thought it was taking away what it needed like food,...
in general, there could be two realistic answers to this.
The first as a joke ... none, dogs don't have feet they have paws.
The second answer forgiving the feet/paw issue and presuming you meant...
Cesar Millan has an American Pit Bull Terrier named Daddy, some call the color variation a "red nose". He has had daddy since Daddy was 4 months old. He got Daddy from Hip Hop rapper Red Man. Daddy...