Ann & Steve Toon / Leopard / mountain tortoise (Stigmochelys pardalis) with elephant bull (Loxodonta africana) behind in water, Addo elephant national park, Eastern Cape, South Africa, September

Erlend Haarberg / Mountain hares (Lepus timidus) fighting in snow at night, Vauldalen, Norway. Joint overall winner of the GDT European Wildlife Photographer of the Year 2017. Highly commended in the Wildlife Photo...

Erlend Haarberg / Mountain hares (Lepus timidus) in winter coat, at sunset, Vauldalen, Norway. April. Third place of the Harmony of Life Category of the Golden Turtle Photography Awards 2017.

Ann & Steve Toon / Leopard / Mountain tortoise (Stigmochelys pardalis) small male courting large female, Kgalagadi transfrontier park, South Africa, February

Cyril Ruoso / Hermann's tortoise (Testudo hermanni) Alberes Mountain, Catalonia, Spain. Non-ex.

Cyril Ruoso / Hermann's tortoise (Testudo hermanni) Alberes Mountain, Catalonia, Spain. Non-ex.

Ann & Steve Toon / Leopard / mountain tortoise (Geochelone pardalis) drinking from puddle, Kgalagadi Transfrontier Park, South Africa

MYN / JP Lawrence / Eastern box turtle (Terrepene carolina carolina) Pine Mountain State Park, Kentucky, USA. Meetyourneighbours.net project

MYN / JP Lawrence / Eastern box turtle (Terrepene carolina carolina) Pine Mountain State Park, Kentucky, USA. Meetyourneighbours.net project

Alex Mustard / European pond turtle (Emys orbicularis) underwater on the bed of a granite mountain stream. San Teodoro, Sardinia, Italy, May.

Bernard Castelein / Oriental turtle dove (Streptopelia orientalis), near Zemitang, Arunchal Pradesh, India.

Alex Mustard / European pond turtle (Emys orbicularis) on the bed of a granite mountain stream. This one has a small freshwater snail on its snout. San Teodoro, Sardinia, Italy.

Pete Oxford / Man and woman birdwatching in the rainforest from Turtle Mountain, Iwokrama Forest Reserve, Guyana, January 2010

Pete Oxford / Man and woman photographing rainforest from Turtle Mountain, Iwokrama Forest Reserve, Guyana, January 2010

Pete Oxford / Tree covered in lichen on Turtle Mountain with rainforest canopy in background, Iwokrama Forest Reserve, Guyana

Pete Oxford / Queen's Wreath (Petrea volubilis) flowering near Turtle Mountain, Iwokrama Rainforest Reserve, Guyana

Pete Oxford / Wasp (Apoica pallens) colony covering hive, Turtle Mountain, Iwokrama Rainforest Reserve, Guyana

Pete Oxford / Rainforest on Turtle Mountain, Iwokrama Rainforest Reserve, Guyana

Pete Oxford / Bell-apple Passion Flower (Passiflora nitida) flowers, Turtle Mountain, Iwokrama Rainforest Reserve, Guyana

Joel Sartore / Photo Ark / Asian brown tortoise (Manouria emys) head portrait, Cheyenne Mountain Zoo. Captive, occurs in Southeast Asia. Critically endangered.

Joel Sartore / Photo Ark / Asian brown tortoise (Manouria emys) portrait, Cheyenne Mountain Zoo. Captive, occurs in Southeast Asia. Critically endangered.

Jeff Foott / Turtle rock, Terelj National Park, (Larch National Park). Mongolia. October 2008.

Tui De Roy / Steep, broken lava covered in dense, thorny vegetation on the western slope of Wolf Volcano, where hybrid descendants of Pinta and Floreana tortoises are mixed within the Wolf tortoise population. Wol...