The story follows Squeaky, a "little gray mouse" who resides in the safety of a "dark hole in a cellar." Driven by a sense of restlessness, Squeaky decides to venture out, stating, "I was tired of staying in our little dark home," and heads toward the barnyard. This departure marks the transition from the protected domestic sphere to the unpredictable external world, setting the stage for a series of misjudgments that almost cost him his life.
Squeaky’s first encounter is with a creature he perceives as a potential friend. He describes an animal with a "smooth gray coat" that resembles his own, though it is "much bigger." Squeaky is mesmerized by the creature, noting that it was "sitting in the sun and singing a little song." He misinterprets the predator’s calm demeanor as kindness, remarking, "It looked so kind that I wanted to talk to it."
His mother, however, immediately identifies the danger, exclaiming, "That is the terrible cat." She clarifies the grim reality of the situation: "She does like little mice. She likes to eat them." This interaction serves as a critical lesson on the danger of projection—Squeaky assumed the cat was like him because of their shared physical traits, failing to recognize that nature and intent are not defined by appearance.
After escaping the cat, Squeaky encounters a second creature that leaves him terrified. He describes a "strange beast" with a "long, sharp nose," a "strange red chin that shakes," and something red on top of its head. Squeaky is traumatized by its "terrible noise"—the "Cock-a-doodle-doo!"—and describes the bird as looking "very fierce."
Mother Mouse, upon hearing the description, laughs at her son’s confusion. She explains, "That is only the rooster. He would not hurt a poor little mouse." This highlights the inverse of Squeaky’s previous mistake: while he viewed the dangerous cat as kind, he viewed the harmless rooster as a "terrible beast." The contrast between the two encounters underscores Squeaky’s total lack of experience in interpreting the world around him.
The narrative concludes with a profound lesson on survival and perception. Squeaky struggles to reconcile his observations, asking, "the cat looked so kind and the rooster looked so very fierce. How could I tell which one would hurt me?"
Mother Mouse’s final advice is the moral core of the story: "It is never safe to talk to strange animals. You can't tell by their looks which ones are kind." This serves as a cautionary tale for the young mouse, emphasizing that appearances are often misleading. Survival, in the eyes of Mother Mouse, requires caution and a healthy skepticism toward the unknown, rather than relying on superficial judgments of "looks." Through this experience, Squeaky learns that the world is a complex place where the most dangerous threats may wear the most inviting faces, and the most frightening noises may belong to the most harmless creatures.