In this video, we find out what's inside a rattlesnake rattle to learn how rattlesnakes make noise. I thought they made noise like maracas, and have little bits inside of them that knock around, but I was wrong. Instead, rattlesnake rattles are composed of…

In this video, we take a close look at a stingray stinger, also known as a stingray barb. We learn how stingrays sting and how they inject venom. This video answers the following questions:
What's inside a stingray stinger?
What's inside a stingray barb?…