shelterdog
Posted : 3/7/2006 6:55:44 PM
The testosterone will not completely leave until 6-8 weeks after the surgery. Once neutered, the marking may slow down, but it most likely will not stop completely. I've known dogs that were neutered before sexual maturity that learned to mark.
When I had two of my dogs neutered at an older age, once the testosterone was gone, they continued to mark, but not near as much.
Is he marking indoors? If so, some behavior modification on top of the neutering should help that. Check into making or getting a "belly band"-they really help!