Chris Mattison / Marico Gecko (Pachydactylus mariquensis latirostris). Namaqualand, Northern Cape, South Africa.

Chris Mattison / Marico Thick-toed Gecko (Pachydactylus mariquensis latirostris). Namaqualand, Northern Cape, South Africa.

Fabio Pupin / Ocellated thick-toed gecko, (Pachydactylus geitje) with regenerated tail, South Africa, February . Non-ex.

Fabio Pupin / Southern rough gecko, (Pachydactylus formosus), South Africa, February . Non-ex.

Fabio Pupin / Western Cape thick-toed gecko, (Pachydactylus labialis), Little Namaqualand, South Africa, February . Non-ex.

Fabio Pupin / Namib web-footed gecko, (Pachydactylus rangei), Namib desert, Namibia, February . Non-ex.

Emanuele Biggi / Namib sand gecko (Pachydactylus rangei) wide angle portrait, Dorob National Park, Swakopmund, Namibia

Emanuele Biggi / Namib sand gecko (Pachydactylus rangei) portrait, Dorob National Park, Swakopmund, Namibia

Emanuele Biggi / Namib sand (Pachydactylus rangei) close up portrait showing eyes, Dorob National Park, Swakopmund, Namibia

Lucas Bustamante / Giant Ground Gecko (Chondrodactylus angulifer), close-up of eye, Swakopmund, Erongo, Namibia.

Lucas Bustamante / Namib sand gecko (Pachydactylus rangei) portrait, Swakopmund, Erongo, Namibia.

Emanuele Biggi / Palmated gecko (Pachydactylus rangei) with fluorescent body areas when illuminated by UV torch, Namibia

Emanuele Biggi / Palmated gecko (Pachydactylus rangei) with fluorescent body areas when illuminated by UV torch, Namibia

Lucas Bustamante / Namib sand gecko (Pachydactylus rangei) in sand, Swakopmund, Erongo, Namibia .

Christophe Courteau / Namib sand gecko (Pachydactylus rangei), Dorob National Park, Namibia.

Christophe Courteau / Namib sand gecko (Pachydactylus rangei), Dorob National Park, Namibia.

Cyril Ruoso / Namib Sand Gecko (Palmatogecko rangei) Dorob National Park, Namibia

Emanuele Biggi / Web footed gecko (Palmatogecko rangei) Namib desert, Namibia

Christophe Courteau / Web-footed / Palmato gecko (Pachydactylus rangei) endemic species, two photographers taking pictures, Dorob National Park, Namibia.

Chris Mattison / Barnard's thick-toed gecko (Pachydactylus barnardi), Springbok, Northern Cape (Namaqualand), South Africa. April.

Enrique Lopez-Tapia / Web-footed gecko (Pachydactylus rangei) endemic species. Dorob National Park, Namibia.

Enrique Lopez-Tapia / Web-footed gecko (Pachydactylus rangei) portrait, endemic species. Dorob National Park, Namibia.

Enrique Lopez-Tapia / Web-footed gecko (Pachydactylus rangei) endemic species. Dorob National Park, Namibia.

Enrique Lopez-Tapia / Web-footed gecko (Pachydactylus rangei) portrait, endemic species. Dorob National Park, Namibia.

Enrique Lopez-Tapia / Web-footed gecko (Pachydactylus rangei) portrait, endemic species. Dorob National Park, Namibia.

Chris Mattison / Marico Gecko (Pachydactylus mariquensis latirostris) hatching from egg. Springbok, Northern Cape, South Africa.

Chris Mattison / Marico Gecko (Pachydactylus mariquensis latirostris). Springbok, Northern Cape, South Africa.

Chris Mattison / Rough-scaled / Thick-Toed Gecko (Pachydactylus rugosus) male with regenerated tail. Springbok, South Africa.

Chris Mattison / Barnard's Gecko (Pachydactylus barnardi). Springbok, Northern Cape, South Africa.

Chris Mattison / Rough-scaled Gecko (Pachydactylus rugosus), male with regenerated tail, Springbok, South Africa, October.

Chris Mattison / Rough-scaled Gecko (Pachydactylus rugosus), male with regenerated tail, Springbok, South Africa, October.

Chris Mattison / Marico Gecko (Pachydactylus mariquensis). Springbok, Namaqualand, South Africa, October.

Chris Mattison / Austen's Gecko (Pachydactylus austemi). Port Nolloth, South Africa, October.

Tony Phelps / Ocellated Thick-toed Gecko (Pachydactylus geitje). De Hoop Nature Reserve, Western Cape, South Africa, January.

Daniel Heuclin / Cradock / Ocellated Thick-toed Gecko (Pachydactylus geitje). South Africa, January.

Tony Phelps / Thick-toed gecko (Pachdactylus spp.) nr garies, Northern Cape, South Africa

Tony Phelps / Rough thick-toed gecko (Pachydactylus barnardi) adult. Noup, Namaqualand, Northern Cape, South Africa

Tony Phelps / Rough thick-toed gecko (Pachydactylus barnardi) adult. Noup, Namaqualand, Northern Cape, South Africa

Tony Phelps / Spotted Thick-toed gecko (Pachydactylus maculatus) head portrait, near Oudtshoorn, Little Karoo, South Africa

Tony Phelps / Spotted Thick-toed gecko (Pachydactylus maculatus) on rock, near Oudtshoorn, Little Karoo, Western Cape, South Africa

Tony Phelps / Marico thick-toed gecko {Pachydactylus mariquensis} Little Karoo, South Africa

Tony Phelps / Spotted thick-toed gecko {Pachydactylus maculatus} Little Karoo, South Africa

Tony Phelps / Spotted thick-toed gecko {Pachydactylus maculatus} Little Karoo, South Africa

Tony Phelps / Spotted thick-toed gecko {Pachydactylus maculatus} Little Karoo, South Africa

Tony Phelps / Ocellated thick-toed gecko {Pachydactylus geitje} DeHoop NR, Western Cape, South Africa

Tony Phelps / Marico thick-toed gecko {Pachydactylus mariquensis} Little Karoo, South Africa

Tony Phelps / Marico thick-toed gecko {Pachydactylus mariquensis} Little Karoo, South Africa

Tony Phelps / Marico thick-toed gecko {Pachydactylus mariquensis} Little Karoo, South Africa

Tony Phelps / Ocellated thick-toed gecko {Pachdactylus geitje} DeHoop Nature reserve, Western Cape, South Africa

Joel Sartore / Photo Ark / Thick-toed tiger gecko (Pachydactylus tigrinus) portrait, Josh'sFrogs. Captive, occurs in southern Africa.

Joel Sartore / Photo Ark / Thick-toed tiger gecko (Pachydactylus tigrinus) portrait, Josh'sFrogs. Captive, occurs in southern Africa.

Joel Sartore / Photo Ark / Thick-toed banded gecko (Pachydactylus fasciatus) male, portrait, Josh'sFrogs. Captive, occurs in Namibia.

Joel Sartore / Photo Ark / Thick-toed banded gecko (Pachydactylus fasciatus) male, portrait, Josh'sFrogs. Captive, occurs in Namibia.

Joel Sartore / Photo Ark / Thick-toed banded gecko (Pachydactylus fasciatus) male, portrait, Josh'sFrogs. Captive, occurs in Namibia.