Snake?

Snake?

A close-up photo of a hemeroplanes caterpillar species cleverly camouflaging itself as a snake to ward off predators. The neon-green bug creates the illusion of looking like a dangerous reptile by expanding parts at the end of its body at the larvae stage. Its defence before becoming a moth is so well developed, it will even strike harmlessly if approached. Professor Daniel Janzen at the University of Pennsylvannia, snapped the bug while working in the Area de Conservacion Guanacaste, Costa Rica.