[JeanT]

My dog is maybe around two now. Not certain. Later this past summer he started sleeping more, which I thought was from the heat. But he's kept it up so I thinks it's part of the maturing process. We generally have about three hours of walking, running (him) and playing (tug, retrieve, chase) in morning, early evening and late night. He still likes a late night burst of activity before going into a dead-to-the-world sleep for the night. Almost every day includes a few short car rides because he likes to be with me for errands. We often have a visiting dog or go to my sister's house where he plays with her dogs but also uses a lot of energy running back and forth looking in the windows to be sure I'm still around. So, I'd say on the least active days he sleeps about 16 hours. A couple of days a week it may only be about 10 hours. He is always ready to get up and go do something.