In case somebody without experience is reading this and wanting to try to cut the nails back, make sure you don't cut them back too far or you'll clip the vein inside and cause them to bleed and a lot of pain (imagine cutting your nail off halfway to the cuticle). If you cut the nails in a well lit room you can actually see the vein inside so you can avoid it. Alternatively you can also bring them to a groomer to have this done. It also helps of they have a scratching post, sonething rough and durable like those wound rope ones so they can "file" them down naturally in between clippings.