I wouldn't kill him unless you just want to. I sure wouldn't so it because I thought he was going to pass on some recessive genes. Like Stan says, I don't think he can reach it to do the deed anyways unless she gets on her knees. He's distinctive enough that it would be cool to see how often you see him or he shows up on camera.

If you do kill him make sure to pull the jawbone. I'd like to see it to get an idea of his age.