Little nails growing on the cat's pads are commonly known as corns. The cause of corns may be scar tissue, papilloma virus infection, or wear and tear. If the situation is not serious, the owner can help clean it up. If the situation is serious, you need to go to the hospital for surgical removal. It is best not to let cats often walk on hard and rough surfaces, and to clean the cat's meat pads regularly and keep them clean to avoid the formation of corns.