Dietmar Nill / Large whipsnake {Coluber jugularis} with head raised, ready to strike, Bulgaria

Georgi Tzonev / Whipsnake {Hierophis caspius} in habitat, Kresna Gorge, Bulgaria

Martin Gabriel / Large Whip Snake (Dolichophis caspius), cloudy eyes indicating imminent shedding of skin, Macedonia

Martin Gabriel / Large Whip Snake (Coluber caspius) portrait, Macedonia

Kerstin Hinze / Large Whipsnake (Coluber jugularis) Bulgaria

Kerstin Hinze / Large Whipsnake (Coluber jugularis) flickering its tongue, Bulgaria

Georgi Tzonev / Whipsnake {Hierophis caspius} on log, Kresna Gorge, Bulgaria