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."