Tui De Roy / Wolf-Volcano giant tortoise (Chelonoidis nigra becki) portrait with ground finch (Geospiza sp. ) sitting on foot, Isabela Island, Galapagos. Did you know? Galapagos tortoises have a mutualistic relati...

Roland Seitre / Childres with African spurred tortoise (Centrochelys / Geochelone sulcata) Dakar, Senegal, West Africa, Vulnerable species. Three newly hatched babies and one adult over 100 years old

Roland Seitre / Antoine Cadi, scientist, and assistant measure the shell of an African spurred tortoise (Centrochelys / Geochelone sulcata) Sahel desert, Ferlo North Reserve, Senegal, West Africa, Vulnerable species....

Roland Seitre / African spurred tortoise (Centrochelys / Geochelone sulcata) Sahel desert, Ferlo North Reserve, Senegal, West Africa, Vulnerable species

Thomas Rabeil / Portrait of a Spurred Tortoise (Geochelone sulcata). Termit Massif, Niger, Africa.

Albert Lleal / Red-footed Tortoise (Geochelone carbonaria), native to South America

Pete Oxford / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi), Alcedo Volcano crater floor, Isabella Island, Galapagos Islands, Ecuador

Suzi Eszterhas / African Lion (Panthera leo) mother growling at curious 4 month old cub playing with tortoise, vulnerable, Masai Mara National Reserve, Kenya, sequence 3 of 4

Suzi Eszterhas / African Lion (Panthera leo) curious four month old cub, playing with tortoise, vulnerable, Masai Mara National Reserve, Kenya, sequence 2 of 4

Norbert Wu / Desert Tortoise (Gopherus agassizii), Nevada

Mark Moffett / Galapagos Giant Tortoise (Chelonoidis nigra) in Alcedo Volcano, Isabella Island, Galapagos Islands, Ecuador

Larry Minden / Desert Tortoise (Gopherus agassizii) emerging from burrow beneath Mohave Desertrue (Thamnosma montana), Mojave Desert, California