http://www.newsweek.com/snake-venomous-cottonmouth-copperhead-watersnake-kill-human-1797142

If you saw a snake in your backyard, would you know if it was venomous? Sure, it's easy to tell a rattler from a rat snake, but other species are harder to identify.

To give us some pointers, the Louisiana Snake ID has shared some tips on how to distinguish between three of the most commonly confused snake species in Louisiana—and yes, two of them are venomous.