To the confusion of his friends and family, Barry starts chasing squirrels, eating food off the floor, and otherwise acting like a canine after a flea bite turns his human brain into that of a dog.
Contains four stories for children, including the title work, a cumulative tale in which a wakeful flea atop a number of sleeping creatures causes a commotion with just one bite.
Discusses the history of bloodsucking lice and fleas, examines their family trees, anatomy, life cycles, predators, and prey, and looks at myths and facts about the insects, as well as how to get rid of them.