An emerald tree boa (Corallus caninus) at the Toronto Zoo rests it head atop its curly coils. It's a position you'll find many of these snakes resting in should you come across one in a zoo, but it nonetheless a beautiful emerald display.
Oh my, what a fantastic photo! The details are great and the snake's colour simply breath-taking Is it just me or does he have a little sinister smile on his face?