Its “diamond-shaped” eyes scanned the surrounding landscape — but it wasn’t the only one looking around. Visiting scientists noticed the patterned animal and discovered a new species.

Here's a guide to what snakes are venomous throughout Nevada, how to spot them and what to do if you get bit.

As a rule of thumb, most venomous snakes have a triangular or diamond-shaped head, and nonvenomous snakes have a ... their heads when threatened (to avoid becoming the prey of another animal). Look ...