Being that you were aware it was a dream, this state is considered lucid dreaming.
Snakes usually are a way your mind is telling you that you feel there is talk behind your back and partly because your emotion has turned itself on you. Sort of like an internal aggression that you are fighting off. Being that you were in the jungle, it also interpreted as eruptions of feelings.
What your dream is telling you is that you contain unmet anxieties in which you aren't facing.