So there's this stray... I've let him in a few times and he howls to get let out after an hour or so. But he is still intact and spraying outside my house. I do suffer from allergies so hoping he's a siberian as he does look like it to me. His ears look folded but are just frostbitten. My question is does anyone have experience adopting and neutering a stray then him becoming comfortable living indoors? I'm hoping he doesn't give me a hard time as my husband is already weary about the whole idea.