I can't answer the questions about the YTCA for you..but I understand your point.
As far as the other question. I own a smaller male...3 pounds. By all accounts, he should have grown bigger. Never gained an ounce after about 6 months. He ended up being the smallest out of the litters his dam/sire produced. His litter mates and older siblings all ended up in the 5 lb range.
I wouldn't trade him for the world. He's never had any health issues, but we do have to be more careful with him. He stepped off ONE stair wrong once and injured his knee. It's fine now, but something just that simple was a danger. Just a freak incident. We have to put him in another room or crate when cleaning. He can't jump on and off furniture like the others. He just has to have special care and handling that the others don't is all. It was not something we'd planned for and we had to learn to adjust. But it is something that you learn to manage and work around.
So for me, I can't imagine why that would be something you'd WANT to deal with or why you would WANT one that required such special treatment, but that is just my opinion. I just can't understand why size alone would be viewed as the most important factor...over temperament and good breeding...and for some people that is all that matters.
