Cats lick each other's fur and bite each other's necks because they are in heat. Usually when a male cat wants to mate, he will bite the female cat's back. This is a normal phenomenon. If the owner does not plan to breed the cat, it is best to take the cat for sterilization in time. This behavior occurs among cats as they train their hunting skills, as the neck is the most vulnerable part of the prey.

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Usually cats become sexually mature when they are 6-7 months old, and then they will show signs of estrus, but at this time the owner does not Cats can be bred, because the cat's body is not fully developed at this time, and miscarriage and dystocia may easily occur if the cat is bred at this time.