Lion (Panthera leo) showing flehmen grimace, Zimanga private game reserve, KwaZulu-Natal, South Africa, Africa

A male lion (Panthera leo), doing the flehmen grimace, Tsavo, Kenya, East Africa, Africa

Lion (Panthera leo) . Male doing the flehmen response. Kalahari Desert, Kgalagadi Transfrontier Park, South Africa, Africa

Lion (Panthera leo) Flehmen reaction, Masai Mara National Reserve, National Park, Kenya *** Local Caption *** walking in the grass by rolling up the lips to register the pheromones of female in heat with her Jacobson glands

Lion (Panthera leo). Male doing the flehmen response. Kalahari Desert, Kgalagadi Transfrontier Park, South Africa.

African Lion (Panthera leo) flehmen, Masai Mara, Kenya