The reasons why dogs like to bite their owners’ sleeves:

1. Insecurity: Dogs are too dependent on their owners. When they feel insecure, they will bite their owners’ sleeves.

2. Teeth grinding: Puppies will change their teeth every once in a while, and they will look for items to grind their teeth on their own. Biting the owner’s sleeve is a good choice, so the owner should buy a teething stick for it.

3. Boredom: When a dog is bored and has nothing to do, he will bite his owner’s sleeve to kill time.

4. Hungry: When a dog is particularly hungry and has nothing to eat, it will bite its clothes to inform its owner, and the owner should feed the dog in time.

5. Attract the owner’s attention: When the owner ignores it, it will bite the owner’s sleeve to attract the owner’s attention.

6. Like or hate smells: If a dog likes the smell of its owner, it will feel at ease as long as it is in a place with the owner's smell. Dogs like to play on clothes and even bite them. Or the dog will bite the owner's clothes when he smells an unpleasant odor on the owner's clothes.

7. Want to go out to play: If the dog wants to go out to play, the dog will bite the owner’s sleeve and walk to the door. If the owner does not leave, the dog will run to the door by itself and look at the owner. Then he ran back to his pet owner, bit the owner's clothes again and pulled them out.

8. Sensing danger: When the dog senses danger, it will bite the owner's clothes and pull out, meaning to get you out of this dangerous place.

9. Bacteria on clothes: The sense of smell of a dog’s nose is also more sensitive than that of humans. It may be that the dog has discovered any hidden bacteria on your body.