The dog is growing!! He's already 7.2 kg and towering over the cat (they were the same size when we brought him home 4 weeks ago). I'm sure he does stretching exercises in the night when we can't see him. He's gone very leggy at the moment. Still - he's wonderful - very well behaved, intelligent and learning quickly. He's already off the lead in fields and walking nicely to heel. Recall is good, and he'll sit, lie down and give a paw nicely. Not bad at only 13 weeks old. I'd prefer it if he didn't chase the cat quite so much, and left the shoes alone - but we're working on those! ;-)