Cam Whitnall explains how they rescued the big cats The group of cats include pumas, servals and an Amur leopard, which, according to Hertfordshire Zoo, is the most endangered big cat in the world.

A bid by the Liberal government to ban zoos from keeping elephants and great apes has been quashed by the sudden halt of parliamentary proceedings, to the disappointment of animal-welfare advocates.

The center said a variety of cats have died from the outbreak, including cougars, bobcats and African servals. Start the day smarter. Get all the news you need in your inbox each morning.