A pool for big cats: Siberian tigers gather at a pool of water in the forest park of the Hengdaohezi Feline Breeding Center in the northeastern Chinese province of Heilongjiang. The facility is the world’s largest breeding center for Siberian tigers. Here, about 400 tigers live in an area of 40,000 square meters. So far, 30 tiger cubs have been born in the park this year. The animals are either trained or prepared for release into the wild.