Pal Hermansen / Domestic reindeer herd (Rangifer tarandus) group close together in enclosure, Oppland, Norway, September 2014.

Terry Whittaker / 2020VISION / Pine marten (Martes martes) two 4-5 month kits running along branch of tree in caledonian forest, The Black Isle, Highlands, Scotland, UK, July. Photographer quote: 'Watching a family of young pine ma...

Alex Mustard / Veined octopus (Amphioctopus marginatus) between clam shell halves. Ambon, Maluku Archipelago, Indonesia. Banda Sea, tropical west Pacific Ocean.

Alex Mustard / Diver swimming through wreck, mess hall of USS Kittiwake, US Military submarine rescue vessel. Seven Mile Beach, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea. January, 2018.

Alex Mustard / Diver swimming through wreck, compressor room of USS Kittiwake, US Military submarine rescue vessel. Seven Mile Beach, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea. January, 2018.

Andy Sands / Mining bee (Andrena argentata) small mining bee confined to sandy heaths in southern England sometimes nests in very large aggregations, Surrey, England, UK, July

Pal Hermansen / Domestic reindeer herd (Rangifer tarandus) group close together in enclosure, Oppland, Norway, September 2014.

Steve O. Taylor (GHF) / Pink necked green pigeon (Treron vernans) for sale in cages, Singkawang, West Kalimantan, Indonesian Borneo. July 2010.

Eric Baccega / Common hamster (Cricetus cricetus) in its burrow, Alsace, France, April, captive

Jenny E. Ross / Adult male Asiatic black bear (Ursus thibetanus) being rescued from a "bile farm" by the Animals Asia Foundation. Prior to being rescued, he was kept confined in a tiny cage, and his bile was extracte...

Tui De Roy / Galapagos Pink Land Iguana (Conolophus marthae) new species described in 2009, confined to highest volcano, Isabella Island, Galapagos Islands, Ecuador