I was watching Growing pains TV shows, one scene is that Carol is watching a show called "the sturgeons of Pitt Street", and her mom was watching too and asked Carol "why is the butler on all fours? " then Carol answered the family dog died, and they didn't have the heart to tell their grandma.
I don't understand why Carol's mother ask "why is the butler on all fours? " and the meaning of it. Anyone could help? Thanks.