Emerald Tree Boa

snake snakes reptile reptiles exotic exotics scales scaly cold blooded cold-blooded coiled pattern design breed special breed specially bred rare expensive Serpentes serpent serpents Squamata squamates Vertebrata Reptilia Chordata Serpentes nonvenomous non-venomous constriction swallow prey alive nature natural world genetic engineering genetically engineered animal animals predator vertibre wild life wildlife vertebrae curled-up no people nobody reptilian landscape format close-up macro color photo colour photo photography tree python green tree python boa species species rarity uncommon emerald tree boa green emerald boa boas Boidae Boinae Corallus caninus South America rainforests morphological variant ontogenetic color change color change colour change curled boa constrictor boa constrictors