A man follows a woman with a dog out of a cinema.
He stops her and says, "I'm sorry to bother you, but I noticed that your dog really seemed to be enjoying the movie.
"He cried when it was sad, he barked at the bad guy, and he laughed at the funny parts."
I didn't understand why was he howling at the end though?
"Oh he hates when the director changes the ending from the book.