"The Magic-Marker intensity of Rubel's palette and the undulating quality of her lines are ideal...Beginning readers will gobble up this third installment of the [series]; unlike Ralph, though, they'll have nothing to regret." -- Starred, Booklist
"If, as the saying goes, we are what we eat, then Rotten Ralph has an appropriate first name. He's also the perfect star for this cautionary tale about eating junk food. Four short chapters give beginning readers appropriate starting and stopping places, and the illustrations not only parallel the text but also help define a few delicious phrases."
-- The Horn Book
"In this beginning reader, Ralph and Sarah are still going strong after almost 30 years together. Ralph's suffering and Sarah's concern are palpable in a series of vivid illustrations that depict his worsening condition, as is their pleasure in being reunited. A great addition to the series."
-- School Library Journal