PitbullGirl wrote:but Orion lives in the house and couldn't jump the fence if he wanted to.
Window screens aren't much of a deterrant, nor is a window for that matter. Dogs have been known to tie through chain link fences.
If he ever gets out and gets a female pregnant on that dog's property and the owners of that dog want to hold you responsible you can legally be held responsible for the cost of every dog in the litter.
Ruby's breeding contract stated that an accidental breeding made me finantially repsonsible for all of the puppies - at $1500 each.
Mistakes happen, he could charge the door one day if he smells a dog in heat walking past your house. I know of a resuce that had a dog jump out of a car window at about 30 miles an hour to do the deed - that was during the transport from shelter to rescue.
If he just can't stand the thought of the dog losing his nuts, then your vet may entertain the idea of a vasectomy.
Of course, you could ask him why exactly he is identifying with the sexuality of his dog...