Lucy is 3/5 lbs. of healthy energy thank goodness...I had no desire for a tiny/teacup and whatever else they call them, I only wanted a healthy puppy I could travel with and so far I have been blessed with an excellent breeder and happy little one. She does come with more responsibility - she can't jump and make the couch, etc. though she thinks she can so I have to be diligent in always picking her up if she wants up since she thinks she is a Giraffe...She also tends to get cold easily so I am much more on guard and aware of her than normal. I love her with all my heart and wouldn't change a hair on her head. That said - I certainly wouldn't mind a growth spurt