I adopted Putter from a shelter at seven weeks. She has gotten quite a bit bigger since her first week home. She sits for meals and shakes. She can't understand stay yet, and gets nippy if she has to go out or is overtired. She is a total attention hound, especially with strangers and neighbors. She thinks everyone wants to pet her and give her attention. When she gets attention it's right on her back for a belly rub. She ran and played with a pup twice her size for almost two hours the other day, had a blast, then crashed by the door, her favorite spot.