How zoo animals keep warm during the winter

Footage of animals in a zoo in China trying to keep warm with the help of newly-installed heaters.

In the video, filmed in Chengdu, Sichuan Province last Friday, different animals can be seen using different methods to keep warm in the cold.

Lemurs and other species of monkeys are sitting around their heaters; the gorillas are using hay to to keep warm; lizards are staying close to their new lights and the tortoise is resting in his new "hot spring."