Foot pads are very important for cats when they exercise and play. As they grow, the pads will change and grow something similar to nails. If the cat has no pain or discomfort, the owner does not need to worry. Cat's foot pads are very similar to human skin. After walking a lot and exercising a lot, calluses will grow. In this case, most cats will grow calluses. The owner uses scissors to try to cut them off.