The being alluded to in the header is a reptile, and it makes its home in New York City on East 88th Street in a building that was built in the 1920s. Despite the fact that Lyle enjoys helping the Primm family with their day-to-day tasks and playing with the children in the neighborhood, one of Lyle’s neighbors is certain that he should be placed in a zoo.
This neighbor believes that Lyle should be institutionalized. Lyle is determined to debunk the assumption that he is a terrible guy by presenting proof to the contrary. Mr. Grumps and Loretta, Lyle’s cat, both have a phobia of crocodiles, and Lyle’s goal is to show that he is not an evil person.