I find snakes incredibly intelligent, extremely shy but also have that inner Yang quality (fangs and venom) which makes them capable of being very aggressive (more likely defensive) when confronted or harassed. They are also predators. A couple of months ago, I came across a red-bellied black snake in the rainforest but it retreated quickly once it saw me; however it wasn't too far away, watching me closely and being very curious about my presence. I wish It was a lot cooler back them (steaming hot, near 35 deg. Celsius and 85% humidity), I would have sat there in meditation waiting for the snake to come close.   Frogs on the other hand are also very Yin, have a calm demeanor, and love croaking when it rains or during sunset time.   I enjoy talking to them and meditate when they are nearby. Very soothing and conducive to enter a deep meditative state.   Here are some photos of our wonderful rainforest friends (a very alien looking thing the blue frog, hahaha):