A mother was reading a book about animals to her 3 year old daughter

A mother was reading a book about animals to her 3 year old daughter.Mother: "What does the cow say?" Child: "Moooo!"Mother: "Great! What does the cat say?" Child: "Meow." Mother: "Oh, you're so smart! What does the frog say?" And this wide-eyed little three-year-old looked up at her mother and replied, "Bud."