The man stops to take his dog outside to do exercise because

M: Thank you so much for seeing us today, Doctor. Our dog is having some mental problems and needs a professional evaluation.
W: Of course. I understand that you are very concerned about your dog’s mental health. What’s the problem?
M: He is always running around wild, tearing the furniture up and breaking things. He also doesn’t listen when I give him commands. What do you think, Doctor? Is he depressed?
W: Well, it’s perfectly normal for a young puppy to have this kind of temperament. How often do you take him out to get some exercise?
M: Not that often. You see, I promised my wife that I would always take him for walks. (8) But I started getting really tired of running after him all the time, so I stopped.
W: (9)It’s pretty important that he gets lots of exercise to use up his energy. He shouldn’t be locked up in the house all day. As he grows up he will become mature.
M: I hope so, because I have such high hopes for him! My parents never loved me and never thought I could achieve anything. I’m going to make sure this dog is a winner!
W: I see, so you’re treating your dog the way you wish your parents had treated you?
M: Exactly! And when we win first prize at all the dog shows, I’ll show all those people who made fun of me when I was a kid.
W: Right. Well, Tom, I’m happy to say your dog is totally healthy. (10) You, on the other hand, need some serious professional help!