A pair of adorable polar bear cubs play-fight with each other in the Alaskan snow. Pictured on the coast of Kaktovik on Barter Island, the young polar bears roll around in the powdery snow as they tickle and wrestle together. Finishing their play-date, one of the cheeky bears teasingly sticks out its tongue before bounding towards their mother.
A DETERMINED great blue heron holds on tightly to its prey as the furry gopher attempts to wriggle free .
LOCATIONS bursting with vibrant greens and chestnut browns, these photographs capture the peaceful English countryside in all its glory .
A trout manages to escape the jaws of a hungry cormorant - only to find itself back inside the bird's long beak .
This starling and prairie dog will not back down an inch as they have a fearsome stand-off over who gets to eat a nut .
A curious red squirrel takes a break from collecting nuts and tries her hand at photography .
DINING under the stars, this restaurant takes you back in time - inside an ancient cave .
A brave leopard kicks back and relaxes in the sunshine - just inches from an enormous crocodile .
The gunslingers are long gone and tumbleweeds have taken over at this abandoned American Wild West Theme Park in Cornwall .
Exploding out of the water, a great white shark performs a backflip during a hunt for seals .
In the calm waters of Greenland, gigantic icebergs dwarf everything around them .
At least three people have been killed and more than 100 injured, some seriously, in two explosions at the finish line of the Boston Marathon .
These are the men with one of the most unpleasant jobs in the world .