The last programme looking at how certain animals live by the simple rule of kill or be killed.
Whistling Hunters. The rarely seen, almost mythical, dholes, or Indian wild dogs, are shy, secretive social hunters. They are pack animals, expert trackers in pursuit of prey, who keep in touch with each other using a strange high-pitched whistling, yet are gentle and affectionate when guarding and playing with their pups.
Narrator David Attenborough. A Wildvision production for BBCtv