Sibley The Night I Followed The Dog by Nina Laden

A boy follows his dog one night to see what exactly dogs do when they are on their own.  It's quite a surprising  adventure for the boy.  He thinks his dog is ordinary.But one night when he follows him, he is surprised that his dog  is dressed in a tuxedo and jumps out of a limo.  They end up  at a club called,The Doghouse, where dogs can be dogs and relax how dogs like to.  Great story with illustrations and clever text adds to it.   ~ Mary Jo