Snakes in Temples

I have an idea!
How will they know, in the deserts and jungles there are "Temples". These temples are highlighted above all by having various traps that hinder the arrival of the player to the great reward. But, what if there was something else that hinders the way to the prize? That is the idea I had, snakes, which would be good especially in the temples of the jungles. Obviously they should not be very strong, since the temples are of great importance in the first hours of play. The best thing is that only give a scare to the player and if, it kills, it is by clueless.