Gah, sorry I missed all these comments! I didn't see them!
Greysorrel: I wish I could take him to a vet, but my dad won't let me. We'll try and schedule one when I'm with mom but I don't know if that would work out. Poob has decided to live with Grandma and Mom (which hurts a little, but I wouldn't blame her) and Diesel stays up here when I'm here.
Saddlebag: Yes, we were told he has demodex by the Humane Society, but I know he has food allergies too. Then again, they got his breed wrong, so maybe it isn't Demodex. I can post pictures if that would help?
Churumbeque: Nope, no leesh law. Diesel has stopped killing cats (thank god), but still chases them for fun. Poob can stay with me, but Diesel can't because he's not used to being outside 24/7, and I don't like him going near the road (the Humane society has a habit of picking up OUR dogs if they get too close to the end of OUR driveway, and the last time we couldn't get our dog back, so I don't want to chance it), so he'd have to be on a run, but he gets major anxiety attacks on a run.
Jannette: I'll try and get Diesel more used to going down there, but it still worries me a lot. Thank you!
Tessa: He's finally done killing cats, and just chases them for fun (no aggression shown). I'll try to, but to be honest, I'm not the most stable person in the world right now.
Alexis: I'll try to!
Thanks everyone for your comments!