Sounds of the Wild

A mother was reading a book about animals to her 3 year old daughter.
Mother: "What does the cow say?"
Child: "Moo!"
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 3 year-old looked up at her mother and in her deepest voice replied, "Bud."