Usually dogs will not menstruate again after sterilization, but there may be bloody discharge within 6 months after sterilization, because the sex hormones remaining in the dog's body have not been completely metabolized at this time, which can still cause the dog to go into estrus and cause estrus. A small amount of bloody discharge occurs. Of course, if the dog is not completely sterilized and some uterine tissue remains in the body, it will also cause bloody discharge. It is recommended to go to the hospital to take a X-ray examination and perform another sterilization operation.

What are the benefits of dog neutering:

1. Neutering can reduce mating behavior. The mating behavior here not only refers to actual mating, but also refers to dogs versus toys. Neutering combined with owner education can reduce and avoid this indecent behavior.

2. If the dog is neutered before the estrus period, it can significantly reduce the risk of breast tumors, uterine tumors, cervical tumors and mammary tumors. It can also avoid excessive fertility, which will accelerate the aging of body organs.

3. Neutering can dilute the dog’s territorial awareness and improve its aggression.