Photographs and text describe how to choose and care for a pet puppy. Comparisons are made with the care and behavior of wild animals in zoos and wild animal parks.
Marvin is pleased when his teacher asks him to take care of her dog while she's away, but he soon finds that there's more pressure involved than he likes.
Frustrated because the rules for her class's Pet Day will not let her take her dog to school, Junie B. Jones considers taking a raccoon, a worm, a dead fish, and other unusual replacements.