Rolf Nussbaumer / Southern leopard frog {Rana sphaenocephala / utricularia} Texas, USA.

Karine Aigner / Southern leopard frog (Rana sphenocephala), two sitting. Texas, USA. May.

Doug Wechsler / Southern Leopard Frog (Lithobates sphenocephalus) female, New Jersey, USA.

MYN / JP Lawrence / Southern leopard frog (Rana sphenocephala) Oxford, Mississippi, USA, May. Meetyourneighbours.net project

Barry Mansell / Florida leopard frog (Lithobates sphenocephalus sphenocephalus) Controlled conditions. North West Florida, USA, April.

Barry Mansell / Florida leopard frog (Lithobates sphenocephalus sphenocephalus) Controlled conditions. West Florida, USA, March.

MYN / Paul Marcellini / Southern leopard frog (Rana sphenocephala) Florida, USA, June. meetyourneighbours.net project

MYN / Paul Marcellini / Southern leopard frog (Rana sphenocephala) Florida, USA, June. meetyourneighbours.net project

Michael Durham / Southern Leopard Frog (Rana sphenocephala) juvenile, central Texas

Jasper Doest / Southern Leopard Frog (Rana sphenocephala) in a pond amidst algae, George West, Texas

Jasper Doest / Southern Leopard Frog (Rana sphenocephala) in the water, George West, Texas

Jasper Doest / Southern Leopard Frog (Rana sphenocephala) in the water, George West, Texas

Jasper Doest / Southern Leopard Frog (Rana sphenocephala), George West, Texas

Jasper Doest / Southern Leopard Frog (Rana sphenocephala), George West, Texas

Doug Wechsler / Southern leopard frog {Rana sphaenocephala} Delaware, USA

Doug Wechsler / Southern leopard frog {Rana sphaenocephala} female, New Jersey, USA

Doug Wechsler / Southern leopard frog males calling {Rana sphaenocephala} New Jersey, USA

Barry Mansell / Southern leopard frog {Rana sphaenocephala} Florida, USA

Joel Sartore / Photo Ark / Southern leopard frog (Lithobates sphenocephalus utricularia) portrait, Emporia State University Prophet Aquatic Research and Outreach Center, Kansas, USA. Captive.

Joel Sartore / Photo Ark / Southern leopard frog (Lithobates sphenocephalus utricularia) portrait, Emporia State University Prophet Aquatic Research and Outreach Center, Kansas, USA. Captive.

Joel Sartore / Photo Ark / Southern leopard frog (Lithobates sphenocephalus utricularia) head portrait, Emporia State University Prophet Aquatic Research and Outreach Center, Kansas, USA. Captive.

Joel Sartore / Photo Ark / Southern leopard frog (Lithobates sphenocephalus utricularia) portrait, Emporia State University Prophet Aquatic Research and Outreach Center, Kansas, USA. Captive.