developing

We have a two year old pitt mix rescue. I am aware of the possible dog aggression, however Moses is developing some bad manners that he didn't have before. We caught him on the kitchen counters ( not usual for him at all), and has tried to take food right out of my hand!! He also isn't listening...

My pup is a very dark brown color with a white chest and he is developing small dark spots under his fur on his chest. Is this normal? Sent from Petguide.com Free App