Nick Garbutt / RF - Skull of a male Himalayan ibex (Capra sibirica) (killed by a snow leopard) lying on steep rocky slope. Himalayas, Ladakh, northern India. (This image may be licensed either as rights managed or r...

Paul Williams / RF - Sumatran tiger (Panthera tigris sumatrae) close up portrait, captive. staring at camera, licking nose, captive. (This image may be licensed either as rights managed or royalty free.)

Paul Williams / RF - Lion (Panthera leo) portrait, looking proud, Captive (This image may be licensed either as rights managed or royalty free.)

Ann & Steve Toon / RF - Lion (Panthera leo) male running in desert, Kgalagadi Transfrontier Park, South Africa. (This image may be licensed either as rights managed or royalty free.)

Alex Mustard / RF - Bannerfish (Heniochus diphreutes) schooling in coral reef. Long exposure. North Male Atoll, Maldives. Indian Ocean. (This image may be licensed either as rights managed or royalty free.)

Andy Rouse / RF - Eurasian bee-eater, (Merops apiaster), in colony, Bulgaria

Andy Rouse / RF - Marine Iguana, (Amblyrhynchus cristatus), warming at sunrise , Fernandina Island, Galapagos.

Andy Rouse / RF - Eurasian bee-eater, (Merops apiaster), in colony, Bulgaria

Andy Rouse / RF - Little bittern, (Ixobrychus minutus), hunting in reeds, Bulgaria

Andy Rouse / RF - Little bittern, (Ixobrychus minutus), hunting in reeds, Bulgaria

Terry Whittaker / RF - Crested tit (Lophophanes cristatus) perched in pine tree on the Black Isle, Scotland. February (This image may be licensed either as rights managed or royalty free.)

Terry Whittaker / RF - New Years Eve fireworks celebration in Reykjavik, Iceland with lights reflected in the water (This image may be licensed either as rights managed or royalty free.)