It takes about 2 to 4 hours for a cat to shed mucus and give birth. When the cat is about to give birth, the amniotic fluid will break and yellow mucus will flow out. At this time, the cat needs to be taken to the delivery room and quietly wait for the cat to give birth. If the cat takes a long time Failure to give birth may indicate dystocia, and the owner needs to help the cat give birth. The cat must be sent to the pet hospital immediately to avoid life-threatening consequences.