Ahh it's really good of you to do this. I think you are doing very well so far and I don't think he would be suited to a yorkie either

. Maybe you could say that they are really hard to potty train, are picky eaters, inform him of the cost of vets bills (which he is likely to get if his children aren't careful). I dont know

.Just say whatever to stop him as there are enough poor little mistreated yorkies in this world