why dogs do the things they do

Have you ever wondered why dogs the things that they do? I do all the time. When I look at my dog, I just wonder what in the world would make him act like that?
This is the number one thing that I have always wondered about. Why do dogs droll whenever they see watch there owners eat anything even if they don’t like what we’re eating? I know as soon as my dog hears someone in the kitchen and open the cabinet doors, he runs in the kitchen and the droll starts coming out of his mouth like a waterfall. After about three minutes there are puddles of droll the size of Lake Erie. Then whenever I go wipe it up, the droll is never just in puddles, it’s like having two giant lakes with little creeks branching off. Now I have never met a person that has ever been so excited to see food that they could possibly droll that much or even droll at all over food. Another thing, have you ever noticed why dogs act like their starved? It’s like that haven’t had food in weeks or even month...