The reasons why cats like to bite their fingers:
1. Boredom
When a cat feels bored, it will also bite its owner’s fingers because it wants to play with the owner and take the owner’s fingers off. Fingers as toys.
2. Nature
Cats are naturally interested in fast-moving objects. If the owner teases the cat and moves his fingers around, the cat will have the urge to bite it.
3. Teeth grinding
When a cat reaches the stage of grinding its teeth and likes to bite its owner’s fingers, the owner needs to prepare teething toys for the cat to help it go through the grinding period.
4. Nervous
When a cat is in a new environment, or is frightened, feels scared or nervous, it will also bite the owner's fingers to relieve its nervousness.
5. Hungry
When a cat is hungry, it will gently bite the owner's finger to remind the owner to prepare food for it.