May 22 is the International Day for Biological Diversity. Human activity has caused unprecedented damage to biological diversity in the past five decades. Extinction rate is now 1,000 times the normal rate. Let us get a glimpse of the world through browing a series of animal pictures on this special day. A girl feeds a squirrel in the central park of Minsk, capital of Belarus, March 31. [Photo/Xinhua/Agencies]