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.
Simon Reeve talks about what essential items he always packs in his suitcase.
Simon Reeve wants to share his passion for our planet with younger generations.
Bruce Parry talks about being filmed jumping over cattle while naked and covered in poo.
TV adventurer Bruce Parry tells Eden about his allergies.