Ingo Arndt / Ostrich (Struthio camelus) chick hatching from egg, Africa, captive.

Andy Rouse / African Lion (Panthera leo) female carrying young cub. Masai Mara, Kenya, Africa. August.

Juan Carlos Munoz / Northern tamandua (Tamandua mexicana) climbing tree, Corcovado National Park, Osa Peninsula, Puntarenas Province, Costa Rica.

Ole Jorgen Liodden / Magnificent frigatebird (Fregata magnificens) male with gular pouch, Galapagos.

Mark MacEwen / Japanese macaque (Macaca fuscata) relaxing in hot spring in Jigokudani, Yaenkoen, Nagano, Japan, February.

Alex Mustard / Lemon sole (Microstomus kitt) portrait. Gardur, south west Iceland. North Atlantic Ocean

Diane McAllister,Diane McAllister / Japanese Macaque (Macaca fuscata) male and female huddle together during a light snowfall in Jigokudani Japan, January

Michael D. Kern / Zoo Atlanta / Lemur leaf frog (Hylomantis lemur) mating pair, captive, Critically endangered, from Central America

Edwin Giesbers / Common european toad {Bufo bufo} two males attempting to mate with one female, the Netherlands

Ashley Cooper / Dairy cow with a full udder

Edwin Giesbers / Man weighing Eagle owl (Bubo bubo) chick during ringing session. Netherlands. February 2016.

SCOTLAND: The Big Picture / Whimbrel (Numenius phaeopus) preening with head upside down, St John's Pool Bird Reserve, Thurso, Caithness, Scotland, UK, May.