ADDER, ADULT, ADULTS, AFRICA, AFRICAN, ALONE, ANIMAL, BETWEEN, BIOSPHOTO, BITIS, CAMOUFLAGE, CAMOUFLAGES, CONCERN, COTE, D, DEVELOPMENT, ENUMERATION, GABONICA, GABOON, GENERAL, GHANA, GUINEA, HEAD, HEADS, INDIVIDUAL, IUCN, IVOIRE, KUIJPERS, LC, LEAST, LEONE, LEPIDOSAURIA, LIST, LONE, LONELY, LOW, LR, MATTHIJS, MORPHOLOGY, NOBODY, OF, ONE, ONLY, ORGANISM, PARTICULARITY, PORTRAIT, PORTRAITS, PROFILE, PUFF, RED, RELATION, REPTILE, REPTILIA, RHINOCEROS, RISK, RISKY, SERPENTES, SHOT, SHOTS, SIDE, SIERRA, SIGHT, SIGHTS, SINGLE, SNAKE, SOLO, SP, SPECIES, SQUAMATA, STAGE, THREATENED, TOGO, VENEMOUS, VENOMOUS, VERTEBRATA, VIEW, VIEWS, VIPER, VIPERIDAE, WEST, WILD, WITH,