We have always had mid size dogs but now we have Ricky. A wonderful 6 lb long-haired chihuahua. I used to be of the opinion that chihuahuas were obnoxious, noisy little ankle bitters but then I got Ricky and I discovered that it is often how you raise them from the very beginning. Ricky loves everyone, rarely barks but will let you know if someone is too close to our motorhome or house. He licks instead of bites and is the best lap dog I have ever come across. So I guess my favorite small dog is the long haired chihuahua.