Summary for chapter 5.

Chapter 5: Captain Cook is in the children's room, watching the children put together a jigsaw puzzle, when the doorbell rings. Mr. Popper greets a service man at the door. Mr. Popper takes him to the refrigerator, and asks him to drill air holes into the door. The service man thinks Mr. Popper is crazy, as putting air holes into the door would seem to defeat the purpose of the icebox. Mr. Popper wants to keep Captain Cook somewhat of a secret, so he does not tell him about the penguin. Mr. Popper has to pay him a handsome sum (five dollars) to get the grumpy service man to drill the holes, but he does so.

Mr. Popper next wants the service man to attach a handle inside the door, so that Captain Cook can get in and out. Now the service man really thinks Mr. Popper is crazy, and Mr. Popper again has to give the man extra money to do the job. As the service man finishes up with the handle, Captain Cook stumbles upon him and starts to peck him. The service man screams and flies out of the house. Mr. Popper trains Captain Cook how to use the newly-designed icebox.