[Toadies]

IJ, I also have a 50 lb. female Aussie who is 13 yrs old. She is truly a momma dog, she loves little things. When I introduced her to the piggies, I had the piggie on my lap and I covered the piggie with my hands so that if she DID try to bite, she would nail me and not the piggie. Because she has been trained not to put her teeth on Mommy Pack Leader, she did fine. After a couple of sessions, she was cleaning piggie ears, much to the delight of the piggies-NOT! I still don't leave her unattended with the piggies though.

As far as house breaking, goes, confining him to a room, like the bathroom or laundry area, might be better as he might be able to knock the pen down/over. Being confined for a once outdoor dog may prove to be an issue. A door would better restrict his movements that a pen. If he is on a hard surface floor, puppy training pads may help him for the amount of time he will be confined. Don't forget, he's been able to pee at will up to this point and hasn't had to wait on people for wee-weef. You might also consider hiring a dog walker for a mid-day pee break. I wish you much success with you new "family" arrangements.