Narrator: If you're hiking pretty much anywhere in the US, this is one sound you don't want to hear... [Audio of rattlesnake rattle.] The warning of a rattlesnake. Now, just because a rattlesnake ...

It’s a chilling sound you might never want to hear, but it could signal that someone has less than 24 hours left to live. It’s called the “death rattle,” and it’s enough to make anyone ...

Baby rattlesnakes usually have a small rattle or button when they are born. According to National Geographic, if you can hear the snakes warning sound “ch-ch-ch” — you’re too close.

Rattlesnakes are venomous pit vipers native to the Americas, with 33 species identified by their distinct tail rattle. They ...