What is cats spikes?

Cats spikes are protective structures found on the tongue of cats. They are small, backward-facing hooks made of keratin, the same material found in human hair and nails. Cats use their spikes to groom themselves, as the hooks help to remove dirt and debris from their fur. The spikes also help to hold onto prey while the cat is eating, and assist in the removal of flesh from bones. Cats are the only known animals with spikes on their tongue, and their unique structure is thought to have evolved as a result of their carnivorous diet. While cats spikes are harmless to humans, they can cause some discomfort if a cat licks a person's skin for an extended period of time.