Now, just because a rattlesnake's tail sounds like a built-in maraca doesn ... Unfortunately, snakelets — yes, that's what baby snakes are called — don't have this warning signal.

A night hiker outside Mexico City encountered a baby rattlesnake in a first-of-its-kind sighting for the region, a study said and photos show. Screengrab from YouTube video shared by Ta- Paxkí As ...