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 baby sperm whale assumed the role of a friendly giant when faced with two awestruck divers .
NEW DELHI, A woman activist of India's main opposition Bharatiya Janata Party crosses a police barricade near the residence of ruling Congress party chief Sonia Gandhi during a protest against the recent rape of a five-year-old girl in New Delhi, India, April 21, 2013 .
EAGERLY BITING his nails, this little squirrel is clearly nervous of looming predators as he searches for his meal .
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 .
A proud gorilla mum welcomes her newborn baby western lowland gorilla, a critically endangered species .
A soap bubble lands on the frosty ground and creates a shimmering snow globe as crystals form around it .
These uninvited guests ELEPHANTLY make their annual trip through the reception of this welcoming lodge .
MAKING himself at home, this little snail perches happily on top of this frog's head .
VIBRANT bursts of colour fill the screen as beautiful flowers blossom in these time-lapse videos .
FLEXING his muscles and staring straight at his opponent, this bodybuilding squirrel is the nuts .
NEVER mind being careful not to choke on your food, this mother bird has a bigger challenge on her hands, as her ravenous offspring impatiently launches its head down into her stomach .