Jaymi Heimbuch / African Elephant (Loxodonta africana) orphaned calf bottle fed by keeper, David Sheldrick Wildlife Trust, Nairobi, Kenya

Paul Bertner / Assassin Bug (Acanthaspis sp) being attacked by ants, Gunung Leuser National Park, Sumatra, Indonesia

Suzi Eszterhas / Common Wombat (Vombatus ursinus) orphan met by children, Bonorong Wildlife Sanctuary, Tasmania, Australia

Ingo Arndt / Cheetah (Acinonyx jubatus) male walking by Burchell's Zebra (Equus burchellii) herd, Masai Mara, Kenya

Sebastian Kennerknecht / Agricultural land surrounded by natural habitat, Santa Cruz Mountains, Monterey Bay, California

Jeff Vanuga / White horses of the Camargue galloping through marshes in the Camargue, France. April.

Brent Stephenson / Polar bear (Ursus maritimus) mother and large second year cub swim across calm water, Scott Inlet, Baffin Island, Canadian Arctic, August. Vulnerable species.

Ben Hall / Orcas (Orcinus orca) pair in sea surrounded by mountains, Iceland, January.

Ann & Steve Toon / Banded mongoose (Mungos mungo) drinking, Zimanga Private Game Reserve, KwaZulu-Natal, South Africa, May

Sven Zacek / Hepatica (Hepatica nobilis) white morph and normal blue morph, Southern Estonia, April.

Gerry Ellis / Smoking fire, set by humans to clear rainforest to plant oil palms, Central Kalimantan, Borneo, Indonesia. October, 2015

Gerry Ellis / Orangutan (Pongo pygmaeus) sub-adult male in trees in haze caused by forest clearing, West Kalimantan, Borneo, Indonesia. October, 2015