It is not recommended to neuter a cat when it is in heat, because the cat's genitals will be heavily congested at this time, and if surgery is performed immediately, there is a high risk of massive bleeding during the surgery. If you want to have sterilization surgery, it is best to postpone it until about a week after the estrus period, which is about 7-8 days. In fact, many people want to sterilize their cats during the estrus period, mainly because the phenomenon of cat fussing is very serious during this period. Male cats will poop and urinate randomly, while female cats will meow all night long, which is very torturous. In fact, the owner You can use forbidden love powder on cats, which is a safer and more flexible method.