Four North American black bear cubs have emerged from their den taking tentative steps in discovering the outside world. The cubs were born to mother Phoenix and father Xanthos, on the 15th January, with their birth uniquely caught live on CCTV. Since then they have been finding their feet and bonding with one another inside a secluded den, away from the public eye. But now, with the weather warming up, the excitable quadruplets are beginning to independently explore and experience the great outdoors.