Well my boy gets the paw ones from playing with jolly balls or his unbreakoball, he uses his paws to herd it around so they get word. As far as the ears could be a yeast infection. Are the ear canals red and raw looking or is it just hair loss? Does your dog head shake or lick their paws a lot? Could be allergies, Could be mange, could be rug burn lol how old is the pup?