Exploring some spectacular cases where animals have saved humans including a pod of dolphins who formed a circle around a surfer to save him from a shark and a brave husky that kept a bear at bay as a dog sled racer lies injured.
Take a look at some spectacular images from Gordon Buchanan's Polar Bear Family & Me.
Watch the trailer for Outback Rangers.
Photos from Tribal Wives; the ultimate wife swap!
One of the most wide-spread mammals on the planet, they inhabit every ocean.
Celebrating the best of Africa, the second largest continent on Earth.
Central Asia includes Afghanistan, Kazakhstan and Tajikistan.
Revel in the very best Australia has to offer with this gallery.
Celebrate the best of India with these pictures of the world's seventh largest country.