Daniel Heuclin / Horseshoe whip snake (Hemorrhois hippocrepis) coiled, Souss, Morocco.

Daniel Heuclin / Horseshoe whip snake (Hemorrhois hippocrepis) portrait, Souss, Morocco.

Daniel Heuclin / Horseshoe whip snake (Hemorrhois hippocrepis) coiled, Morocco.

Luis Quinta / Horseshoe whip snake (Coluber hippocrepis) Portugal, April.

Bert Willaert / Horseshoe whip snake (Coluber hippocrepis) coiled up and tongue flicking. Extremadura, Spain, April.

Luis Quinta / Horseshoe whip snake {Coluber hippocrepis} Portugal

Luis Quinta / Horseshoe whip snake {Coluber hippocrepis} shedding its skin, Altetego, Portugal

Inaki Relanzon / Horseshoe whip snake {Coluber hippocrepis} tongue flicking, Spain, July

Jose B. Ruiz / Horseshoe whip snake (Coluber hippocrepis) camouflaged against ground leaf litter, Spain

Jose B. Ruiz / Horseshoe whip snake head profile (Coluber hippocrepis) Spain

Jose B. Ruiz / Horseshoe whip snake (Coluber hippocrepis) Spain