It may be that the owner has only teased the French Bulldog with his feet before, and the dog remembers the smell of the feet and wants the owner to continue playing with it, so it bites the feet. French Bulldogs will go through a teething period when they grow up. During this period, they will like to chew on furniture, shoes, and the owner's feet or trouser legs. Owners can buy teething sticks to attract the dog's attention. The owner should loudly stop the dog when it bites its feet and warn it that this is disrespectful to the owner and the owner will be angry.