Morgan Freeman needs to narrate the movie adaptation.

"And so off into the city they went, to see if they could find where their human goes all day. Now one might think that two animals roaming the city might be dangerous for these animals, and one would be right. Dangerous it would be, as there were many adventures and misadventures around every corner of the big city. I'd like to tell you that our heros immediately found their human, and all was well. I'd LIKE to be able to tell you that, but alas our story is just beginning."