rare anerythristic boa constrictors: captivating beauty in dark morph

anerythristic animal beautiful black eye anery boa constrictors camouflage captive carbon closeup coil coldblooded constricting constrictor creepy dangerous dark morph eerie exotic forest genetic mutation genetics herpetology hunting jungle melanism morphological variation mysterious nature nonvenomous pattern pet predatory rare reptile scales serpentine serpents slither snake species stealthy tropical unique wild wildlife captivating beauty