He seems to have some energy. His stool is good. He does seem to be a little more agressive and he tries to hump anything that stands still long enough. I thought he might be teething because he seems to want to chew on everything.

Is this something to worry about. He also seems to be a little sluggish lately. This isn't a sign of parvo is it?

Are there any pointers I need to know in raising a lab/pit mix. I have noticed already the he is head strong. How big do they get? He weighs 40lbs at 4 months old.

I have a cat inside and they are not the best of friends yet, also I work alot on the computer and he tends to be a hand full when he wants to play.

He just started doing this. It seems like he needs more and more attention. I take him hiking and to the dog park almost everyday. What can I do to make him happy outside by his self