When a dog loses a toenail it may only mean they tore it off on
accident. If the nails are falling off for no reason, the dog may
suffer from an infection. The dog will need to be taken to a vet
If a cat has ripped off a toenail, it is important to clean the
foot with peroxide and then continue to keep the foot clean as it
heals. If you notice swelling, redness, or bleeding, take your cat
to the veterinarian.