Western Cottonmouth, Agkistrodon piscivorus leucostoma

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Western Cottonmouth (Agkistrodon piscivorus leucostoma), adult in defense posture, Fennessey Ranch, Refugio, Coastal Bend, Texas Coast, USA
Western Cottonmouth (Agkistrodon piscivorus leucostoma), adult in defense posture, Fennessey Ranch, Refugio, Coastal Bend, Texas Coast, USA