Other Causes. If your puppy or dog has not been properly vaccinated and begins to shiver, cough, run a fever or discharge mucus from his eyes and nose he may have distemper, a virus common in puppies and adolescent dogs.
Heel Injuries. One of the most common foot problems seen by physicians is heel pain. One of the most common problems seen by physicians who care for the feet involves pain in the heel. Heel or arch pain that occurs in adult patients is most commonly caused by a condition known as plantar fasciitis.
A podiatrist (foot doctor). The podiatrist will cut the ingrown toenail the proper way and pay attention so you know how to cut your nails properly. It should be straight across. I always cut out my own ingrown toenails but soak them in warm water first to soften them.