Marie Read / Great blue heron (Ardea herodias) in breeding plumage, head and shoulders showing plumes on crown and neck, Montezuma National Wildlife Refuge, New York, USA, May.
00652729
Theo Allofs / Giant River Otter (Pteronura brasiliensis) swimming, Pantanal, Brazil
00652141
Chase Dekker / Brown Bear (Ursus arctos), Katmai National Park, Alaska
00651108
Roland Seitre / Darling's Mole-rat (Cryptomys darlingi) incisors, native to Africa
00651104
Roland Seitre / Angolan Giant Mole-rat (Cryptomys mechowi), native to Africa
00651103
Roland Seitre / Angolan Giant Mole-rat (Cryptomys mechowi), native to Africa
ZSSD / Reticulated Giraffe (Giraffa reticulata) and Yellow-billed Oxpecker (Buphagus africanus), Kenya
00650035
Daniel J. Cox / Orangutan (Pongo pygmaeus) male, Tanjung Puting National Park, Indonesia
00649956
Hiroya Minakuchi / Japanese Yellow Hornet (Vespa simillima), Japan
00649288
Christian Ziegler / Woolly Opossum (Caluromys philander) feeding on Balsa Tree (Ochroma lagopus) flower nectar at night, Barro Colorado Island, Panama
00649186
Christian Ziegler / Cat-eyed Snake (Leptodeira septentrionalis) eating egg clutch of Red-eyed Tree Frog (Agalychnis callidryas) some tadpoles escaping through early hatching, Soberania National Park, Panama
00648908
Thomas Hinsche/ BIA / Great Cormorant (Phalacrocorax carbo) predating fish, Hungary
00646673
Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis vandenburghi) pair facing off, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador
00646433
Juergen & Christine Sohns / Gorilla (Gorilla gorilla) silverback scratching, native to Africa