Michael D. Kern / Kaleidoscope pattern formed from picture of Johnstons Chameleon (Chamaeleo johnstoni) face and legs. Restricted for Editorial use until December 2015

Ingo Arndt / Grizzly bear (Ursus arctos horribilis) silhouette, Lake Clark National Park, Alaska

Bence Mate / Black-winged stilt (Himanthopus himantophus) in rain, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary, July.

Edwin Giesbers / Western lowland gorilla (Gorilla gorilla gorilla) twin babies age 45 days sleeping in mother's arms, captive, occurs in Central Africa. Critically endangered.

Cheryl-Samantha Owen / African elephant (Loxodonta africana) close up of trunk, Amboseli National Park, Kenya.

Claudio Contreras / Caribbean flamingo (Phoenicopterus ruber) preparing to sleep, Ria Lagartos Biosphere Reserve, Yucatan Peninsula Mexico, July. Bookplate.

Markus Varesvuo / Dippers (Cinclus cinclus) fighting in snow, Kuusamo, Finland, March. Second Place in the Telephoto Lens Category of the Terre Sauvage Nature Images Awards competitiion 2015.

Bence Mate / Great egret (Ardea alba) hunting fish, Lake Csaj, Pusztaszer, Hungary, February. Winner of the Portfolio category of the Terre Sauvage Nature Images Awards competition 2015.

Danny Green / Red fox (Vulpes vulpes) scratching in the snow, Churchill, Cananda, November

Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) adult male 'Frodo' aged 35 years portrait. Gombe National Park, Tanzania.

Loic Poidevin / Reindeer (Rangifer tarandus) calf next to mother's legs, Finland, April.

Cyril Ruoso / Sumatran orangutan (Pongo abelii) baby reaching up to mother's hand, Gunung Leuser National Park, Sumatra, Indonesia.