My only guess is he was trying to breed with her and he grabbed onto her mouth to hold on.. I know he was beyond rough on her, he used to just pounce on her and bite the crap out of her and take lots of chunks out of her disc. With any luck I can hope he knocked her up when he did all this damage but I'm not getting my hopes up.. Lol
Thanks for answering, never seen or had the pleasure of dealing with it myself so I gotta live through others till that day comes.
Here's to wishful thinking!