A small dog named Big Al gets left behind at a truck stop, where he waits for his owner to come back for him.Jo drives a big, blue rig with Al in the seat next to her, sharing life on the road. Al has white fur with rust-colored spots and dark, expressive eyes, poignantly illustrated on the appealing cover. Jo has curly, red hair, light skin, and a jaunty baseball cap personalized with her name. In peppy, rhyming text Al details his antics around the truck stop and his sad realization that while he was playing, he was left behind when Jo hit the road. Al waits at the truck stop all afternoon and into the night, growing more and more worried about Jo's whereabouts. Just as a brown-skinned boy named Zack is begging his parents to let him adopt the stray dog he's found, Jo pulls up in her blue truck for a happy reunion with her canine best friend. Watercolor-and-pencil illustrations of Al's playful behavior and expressions help make him an irresistible character. A wide variety of formats and perspectives add interest, with a fine sense of dramatic suspense particularly evident in the nighttime scenes.Humor, emotion, and great puppy-dog eyes. (author's note) (Picture book. 4-8)