Robert Valentic / Rough-scaled death adder (Acanthophis rugosus) waving tip of tail as a lure to entice prey within striking range. Mount Isa, Queensland Australia.

SCOTLAND: The Big Picture / Red deer, (Cervus elaphus), stag in rough grassland, Jura, Scotland, UK., April

Chien Lee / Rough Tree Frog (Theloderma horridum) camouflaged on bark, Kuching, Sarawak, Borneo, Malaysia

Ingo Arndt / American Crocodile (Crocodylus acutus) swimming in open ocean, Pacific Coast, Ostional, Costa Rica

Ingo Arndt / Wind storm in Fortuna Bay area, South Georgia, February 2011

Tony Wu / Humpback whales (Megaptera novaeangliae) unusual scene with two adults tail-slapping together in rough seas, Vava'u, Tonga, South Pacific

Luis Quinta / Storm waves off the coast of Praia do Norte, Nazare, Portugal. January.

Ben Hall / Marine iguana (Amblyrhynchus cristatus) on rock taken with slow shutter speed to show motion in the water, Galapagos islands, May.

Wim van den Heever / Cape Buffalo (Syncerus caffer) in darkness, Masai Mara, Kenya.

Cyril Ruoso / Verreaux's sifakas (Propithecus verreauxi) in Madagascar ocotillo (Alluaudia procera) trees Berenty, Madagascar.

Pete Oxford / Galapagos land iguana (Conolophus subcristatus) walking, South Plaza Island, Galapagos. Endemic.

Gabriel Rojo / Bay-winged cowbird,(Agelaioides badius) chicks begging for food, La Pampa, Argentina