I have a little boy, (pepper) who started out not wanting to play, I would have been thrilled to just see him run! He's 9 months now weighs not quite 2 1/2 lbs so hes a little guy and he's a little "live-wire" now but it has just started within the last couple of months. He also visited the vet alot with different ailments and I didn't get him from the breeder until he was 16 weeks. Hopefully you're little guy will be the same way and you might even think those calm days wasn't so bad.....?!