Will dogs still get hard after being neutered?

Male dogs will still get hard after being neutered, because within a short period of 1-3 months, there may still be some male hormones remaining in the body, so it is difficult to have an erection. It's normal. Because male dogs are sterilized by removing their testicles, they are infertile without semen.
After neutering for a long time, it is also normal for male dogs to have estrus movements such as arching their backs and hugging pillows. This is mainly because male dogs still have animal instincts, habits and memory.

Editor’s reminder

You must go to a regular hospital for surgery. Even if it is a routine sterilization surgery, some unlicensed clinics or door-to-door doctors will cause problems. There is no guarantee at all. Really If you don't do it cleanly, you will definitely go into heat. Moreover, if you are greedy for cheap, the dog is likely to undergo a second surgery, which is more difficult and the dog will also suffer.