Cobras

Cobras are docile but wary neutral mobs found in jungles and batlands.
They are wary of the player and certain humanoid mobs such as villagers, and will intimidate them by spreading their neck (spreading their hood), making the triangle shape more prominent.
When attacked, they will retaliate with a single bite attack that inflicts the new "Paralysis" effect, immobilizing the player and most mobs (excluding wardens and undead mobs), before fleeing.
Cobras will occasionally shed their skin, from which "Cobra Snake Skin" can be obtained, which can be used as an ingredient in the new "Paralysis" potion.