Mammals lay eggs?

Those that know me know that I love science,especially biology. My daughter inherited the love for science.

She was chatting with me. Out of the blue she says, "Mommy did you know that the platypus is the only mammal to lay eggs?"

"I don't think that is right. Mammals are covered in hair, produce milk, and are warm blooded. They give birth to their young."

She says, "Well not the platypus."

"Well I don't think you are right but lets look it up!"

So I go to the computer and sure enough she is right. It is the exception to the rule.

She was so proud to have taught me something. Then she danced around the living room saying. "I told you mommy...T.V. is a GOOD thing."