Relentless Enemies

S1, E13: The great lions of the Tsaro pride are larger, more fearsome and more innovative than your typical lion. These enormous lions have thick necks and heavy chests built to wade through water and hunt places big cats normally avoid. Trapped on an island with these giant killers are thousands of buffalo who are forced to devise defensive tactics and eventually learn to fight back. See the battle unfold from a unique perspective as National Geographic Channel tracks the movements from the air and up close. Narrated by Jeremy Irons.