Camo snake
If you go hiking you may not see some snakes because they are camo. An example is a Saw Scaled viper. It is a pit viper. Some snakes like the Egg Eater snakes mock it if scared. The Saw Scaled viper usually hides in leaves. When startled It will attack at lightning speed. If you get bit you need to go to the hospital. The venom can be fatal.