Originally Posted by
Labradorks
Your dog may have been humping because he needed more exercise, mental stimulation or training. He may have learned that humping = attention or that humping = stress relief. When overly excited, stressing up, or just being bored, some dogs jump, some spin, some do zoomies, some grab with their mouths and some hump. Your friend "establishing dominance" probably just scared the dog into submission. If you get another dog with a similar temperament to that dog and you train/house/treat the dog the same way, you'll likely get a similar outcome, regardless of sex.