Welcome to YT! I heard the same scary stories about Yorkies - they are extremely smart, but they can't be house trained. If they are so smart, why can't they be house trained? It was a bit confusing to me. Darwin is just under two and has been totally house trained since about 7 months old. He is about 7 1/2 pounds and seems very big compared to our newest pup, Mabel. She is 7 months old and I believe is now completely house trained and almost full grown. She is just a little over three pounds and doesn't give any signals about needing to go out yet but I take her out every four hours now. When we first got her, it was every 1 1/2 hours. I think it is much more about training ourselves then it is in training them. When a pup has such a tiny bladder, they do need to go out more often but when they are over half a year I believe you can leave them much longer. Mabel has never peed in her crate and I have gotten away with about 11 hours. I try not to do this too often, but it was nice when I wanted to go to bed early. Mabel doesn't like the cold and our walks are as short as possible. As soon as she is done I pick her up and get her home. It gets pretty cold here too, not as cold as Toronto, but we have lots of snow. I've bought boots for Mabel but they still aren't here. She tends to run on three feet most of our walks. Good luck and I'll keep an eye out for your pictures of your new little pup!