WHAT'S INSIDE a Rattlesnake Rattle!
If you go on vacation and hike around the desert, be really really careful when you hear this sound:
That’s the sound of a rattlesnake and it’s just about angry enough to bite! They make that sound to warn people and other animals to stay away.
So what’s inside that snake’s tail to make its warning sound? Dan and Lincoln cut open a rattlesnake’s rattle to see what’s there: