Rattlesnakes, Gila Monsters, and Scorpions Oh My! Yes, when you are exploring the desert it is a good idea to have some knowledge about a few critters in the park who might impact your stay. There is a high chance that you will not even see one, but just in case you happen to cross paths, this talk may be of some use to you. The ranger will go over the variety of venomous critters in the park, how to avoid a negative encounter, and what to do if you are bitten or stung. This critter creppy talk is inside the Discovery Center.