Incredible footage of a lion fighting off a crocodile in a Botswanan river after it attacked his younger brother. <br /><br />The video, filmed at Wilderness Safaris' King's Pool camp, shows the two big cats swimming across the Linyanti River, when suddenly a hungry crocodile attacks the smaller of the two.<br /><br />Fortunately, the older lion fights back to protect his younger brother and helps him to safety. <br /><br />One of the big cats then retreats to the shore they started from, while the other makes it to the other side. <br /><br />The filmer, who was on safari at the time, told the story online, writing: "We found them [the lions] by the Linyanti river between Botswana and Namibia, and watched them drinking water. <br /><br />"We thought they would come back out of the water but then we saw the younger one going back in." <br /><br />"Our guide saw a crocodile on the right and we saw the older one look at the croc," she continued. <br /><br />"Again we thought they would turn back but the younger one kept going in deeper. <br /><br />"The older one hesitated and then followed him in. <br /><br />"As they swim across the crocodile speeds up and while we all watched with our hearts in our mouths, the younger lion was attacked by the crocodile." <br /><br />"The older one then attacks the crocodile and effectively saves his younger brother before going under the water; the younger one started swimming back and we thought the older one was gone, but then we saw him pull himself into the reeds - incredibly they both survived with no injuries!"