Our Sophie Anne is 4.5 lbs and just over 1 year old. I think she might go to 5 lbs. She is very study for her size and has been very healthy. We are careful with her but she thinks she's much larger and is somewhat of a daredevil. She loves to jump down off of the furniture. We bought her stairs to get up on our bed because it's quite high. She uses them to go up but not down. Our last yorkie was 16 years old and 6 lbs. when we had to put her down and she too liked to jump but never injured herself in all the time we had her. I've read about the leg injuries too and try to lift her down from furniture if I catch her trying to leap just in case. She's a great "little" cuddler and we love her just as she is.
