Reptiles and snakes in a dream relate to instincts and sensations that are somewhat unconscious and self regulating. The reptilian portion of the brain is the oldest and is associated with autonomic reactions, sex and survival mechanisms. Often dreams of reptiles will portray organic and autonomous functioning that remains unconscious to you. Our most ancient evolutionary processes are captured by the image of reptiles. They shed their skin and move around on all fours in a fight or flight posture, symbolizing insecurities or a sense of panic that may need to be controlled. This primitive side of your autonomic functioning and your relationship to it, will be portrayed in the type of reptile and your interaction with it.