If it is normal postpartum bleeding, it is often accompanied by white viscous fluid, which is mainly to discharge lochia in the uterus, that is, some necrotic tissue or mucosa in the uterus, etc., while abnormal heavy bleeding may be due to the appearance of uterus. It is very dangerous if it is caused by rupture or abnormal coagulation function, so owners need to pay special attention to the postpartum care of female cats.