From School Library Journal:
Grandpa tells his two grandchildren a story about the days long ago when dogs and cats wore clothes, did all the work, and ruled the world. Then a dog named Herman found a new kind of creature who could be trained to wait on them: eventually, the dogs and cats got even lazier, grew fur, and let the new creatures, called Herman's Beings, take care of them. This situation still exists today, as human beings … still take care of dogs and cats…
From Publishers Weekly:
…a grandson's comment that "dogs and cats are nice but it seems all we do is wait on them!'' launches Grandfather on a rollicking yarn about the way of the world back when it was ruled by cats and dogs. … Gerstein's splendidly silly story contains the kind of crazy logic kids love and a punchline that packs a merry wallop. His palette is rich and his pictures whimsical.