Who's that crossing the trail? It's common to find Pacific Gopher Snakes out and about in the park this time of year and, by keeping rodent populations in check, they form a vital part of our ecosystem. Gopher Snakes are non-venomous constrictors that capture prey by wrapping around it. They can also flatten their heads and shake their tails to imitate rattlesnakes if they feel threatened. You don't have to worry if you see one, just give it space to escape!