Every year, several days before the Mid-Autumn Festival, zookeepers across China would feed animals with special "Mooncakes" to celebrate the Mid-Autumn Festival. The traditional holiday treat is often served with ingredients like carrots, nuts, grass as well as fruits. Chinese have the tradition to eat moon cakes which usually are made with sweet red beans or lotus-seed paste filling during the Mid-Autumn Festival, which falls on Sept. 24 this year. /VCG Photo

A panda named Hua'ao was eating its mooncake on September 9, 2013, in the Yantai Zoo in Yantai city, east China's Shandong Province. /VCG Photo

Zookeepers held a Mid-Autumn Festival party for gorillas with fruits as well as mooncakes in Chimelong Safari Park on September 26, 2004. /VCG Photo

A white tiger was captured eating mooncake on September 26, 2004, in Chimelong Safari Park, Guangzhou, south China's Guangdong Province. /VCG Photo