Fabio Pupin / European ratsnake, (Zamenis situla), resting on tree trunk, Croatia, April . Non-ex.

Fabio Pupin / European ratsnake, (Zamenis situla), resting on tree trunk, Croatia, April . Non-ex.

Daniel Heuclin / Leopard snake (Zamenis situla) captive, occurs in Eurasia.

Chris Mattison / Leopard snake (Zamenis situla) hatching.

Chris Mattison / Leopard snake (Zamenis situla) with clutch of recently laid eggs, captive, native to south east Europe.

Fabio Liverani / Leopard rat snake (Elaphe situla) on rock, Matera, Basilicata, Southern Italy

Georgi Tzonev / Leopard rat snake {Elaphe situla} basking, Kresna Gorge, Bulgaria

Georgi Tzonev / Leopard rat snake {Elaphe situla} in habitat, Kresna Gorge, Bulgaria

Tony Phelps / Leopard rat snake {Elaphe / Zamenis situla} male, captive, from Southern Italy

Tony Phelps / Leopard rat snake male {Elaphe situla} captive, from Southern Italy