A closeup of a juvenile Western Cottonmouth Water Moccasin (Agkistrodon piscivorus leucostoma). As Western Cottonmouths get older their coloration becomes darker, and they may eventually loose most of their markings. They are also known as: Cottonmouth, Water Moccasin, Black Moccasin, Blunt-tail Moccasin, Stump-tail Water Moccasin, Viper, Cotton-mouthed Snake, Congo Snake, Trap-jaw, or Gapper.
A closeup of an older adult Western Cottonmouth Water Moccasin (Agkistrodon piscivorus leucostoma). As Western Cottonmouths get older their coloration becomes darker, like this one. They are also known as: Cottonmouth, Water Moccasin, Black Moccasin, Blunt-tail Moccasin, Stump-tail Water Moccasin, Viper, Cotton-mouthed Snake, Congo Snake, Trap-jaw, or Gapper.
