A Siberian tiger named Tianxin undergoes a tooth extraction in Changchun, Jilin province, on April 19. Tianxin is 18 years old, equivalent to humans in their 80s. A few months ago, the breeder discovered the upper molar on the right side of Tianxin's mouth was damaged, causing severe gum bleeding, swollen cheeks and reduced food intake. CHINA DAILY

Tianxin has recovered well after the surgery in Changchun on Monday, and can now eat and drink normally. WANG QIANG/FOR CHINA DAILY