Yorkies live a long time compared to bigger dogs
My sister had a Mastiff once, the biggest and yet gentlest dog she has ever owned, and poor Hazy died at the age of only seven years. The cat mourned for days (which I understand is a long time for a cat}, because Hazy was the gentlest playmate that cat had! I know I am generalizing about things I could be more specific about if I got the facts, but I know in my experience the biggest dogs have often been the easiest to get along with. Big ol’ labs and retrievers let the house’s toddlers pull their manes and crawl all over them, using them as horses or trucks or tractors or punching bags!