Difference in Dogs

Yesterday was Casey's birthday. He is three. My foster dog, Gavin, is also three. I was thinking last night...I have one three-year-old dog who acts like he's 50 and another three-year-old dog who acts like he's a puppy. Unfortunately, the puppy-acting one is a 127-pound, completely untrained great dane!

We are working really hard on mastering "sit" this week. He didn't respond to treats when we first got him, but now he is all about them! So that helps in the training dept. We must have done hundreds of repetitions by now. He is coming along!