[gemy]

Make sure you mention this behaviour to the vet. You have experience, and it sounds like you are a bit concerned. My Yorkie was basically full speed ahead from the day I brought him home. Of course there were lots of naps after energetically playing for 15-20 minutes.

Is he eating and drinking well? Does he show interest in your other Yorkie? Is he exploring his new environment.? Finally what does the breeder say? Some pups are naturally more laid back than others.