Raising his arms above his head and lying flat on his back, a polar bear stretches as he sprawls out across the ice .

An American black bear mimics John Travolta’s famous Saturday Night Fever dance move by hurling its arm in the air .

A baby girl has become the youngest British patient to receive a life-saving cardiac operation after her heart swelled to twice its normal size within days of her birth .

A Little owl looks down the lens of a camera and gives the photographer a cheeky wink .

A trio of ants are locked in a tug of war over a fly as they pull the bug by its legs .

A feisty squirrel takes on a fearsome foe when he decides to tackle a T-REX .

As sunlight cascades through its vibrant stained glass windows, every inch of the Nasir-ol-Mulk Mosque bursts with colour .

These images of vintage cars, bikes and vans, pictured all over the world, could easily have come from a globetrotting petrol-head’s photo album .

A bear cub unwinds in a forest in eastern Finland by practicing yoga with a series of stretches .

An adorable orangutan named Pongo celebrates his first birthday at Zoo Atlanta, Georgia, America .

An Australian explorer has travelled the globe with a toy pig, known as Travel Piggy, in search of a missing cuddly companion .

From the tails of fighter planes to black and white checked buildings, graveyards take different and unusual forms around the world .