They are one of the best dogs to own. My Tzu was the first dog I ever owned, I got him when I was young (13 or 14) and he made me grow up loving the breed. I'm 21 now and hope to maybe own another one some day. I hope you can talk him into getting you another one!
We love our Russell. I'm a retired dog trainer and when people would ask me the best small dog for children, I would always tell them the Shih Tzu. A little hard to housebreak but most even-tempered toy dogs in the world. Trying to talk my husband into another boy (he's plain silly about Russell who he calls "****ee"...big laugh!). I think I'm wearing him down.