Emerald tree boa

The emerald boa hunts by night.  It then slides down the trees to a low branch.  It hangs there, head downward, taking an S-posture.  It waits there, perfectly still, for a small mammal (rodent or marsupial) to pass.  The boa then springs down to grab its prey.  Thermoreceptors on either side of the boa’s jaw detect its prey’s body heat..  The emerald tree boa also eats on nocturnal lizards (geckos).