Reesie started humping when he was 11 weeks old also. I had no idea that they start that young!!! You want to make sure that he knows it is wrong to hump a human, they do this as a dominance thing (or so I've been told.) It does help to bring down their "equipment" so it is easier for the vet to fix them. If the "equipment" is not in the right place, the vet has to do exploratory surgery to find it. This is harder on the dog, and it costs more for the surgery.
