Cats receive direct benefits from having their nails trimmed. Cat's nails grow in layers that are like shells. When cats “sharpen” their claws, they are removing the older shells to expose the sharper new ones. However, often cats do not successfully remove the shells. This can lead to ingrown nails that can become extremely painful and can lead to nasty infections. Regular nail trims prevent ingrown nails. Furthermore, a cat with trimmed nails is likely to enjoy a better relationship with her family, since she won’t be ejected from laps merely for making kitty dough.