Signs before a cat gives birth:

1. Restlessness. Cats will have premonitions before giving birth and will walk back and forth restlessly, feeling that a cat baby is about to be born.

2. Keep moaning. If a cat has swelling and pain in its abdomen, it will moan continuously and seek help from its owner.

3. The abdomen begins to contract. If the baby cat is about to be born, the mother cat's abdomen will begin to contract, and the uterus will continue to contract to promote the delivery of the fetus.

4. Liquid flows out of the vaginal opening. There may be fluid coming out of the vaginal opening, which is called amniotic fluid.

5. Bloody discharge from the vaginal opening. If there is blood entering the amniotic fluid, there will be some red blood streaks when the amniotic fluid breaks and flows out.