Okay two questions that could go under the heading of simultaneous training, and they are unrelated:
1. How much harder is it to housebreak (crate train) 2 puppies at once? We're picking up our little guy next weekend but I have a tiny feeling we could wind up with 2....somebody please talk me out of this.

and
2. During the crate training period with a very consistent schedule, can we also be training for other things like sit, stay, etc? Or is it best to concentrate just on the potty training and do the rest later. The puppy(s) will be 13 weeks when they come home with us.