Has your dog developed a callus? Dog calluses, although common and generally harmless, are more likely to form on medium to larger, short haired breeds.  It’s best to get any calluses checked by a vet in case the calluses are being caused by allergies or a zinc deficiency, however, the more common reason for dog calluses, is allowing your to rest or sleep directly on hard flooring, unpadded dog crates or dog houses.  Dog calluses can be treated by rubbing Vitamin E on the callus, but prevention is the best cure.  One of the best ways to prevent new calluses is to keep a variety of dog pillows and beds all around your house and in places where your dog is likely to rest and sleep. Keeping your dog off the floor also aids in the healing of old calluses.