Three South China Tiger cubs, born three days ago, take a nap in an air-conditioned cage in a fostering center in Suzhou, east China's Jiangsu Province December 26, 2004. Their mother, 8, has given birth to 11 babies in the last four years. The fostering center boasts of 15 human-bred 15 South China Tigers, accounting for 20 per cent of the world's total.