A mother feeds sheep at the 2013 Houston Livestock Show and Rodeo in Houston, the United States, Feb. 25, 2013. The 2013 Houston Livestock Show and Rodeo kicked off on Monday and runs through March 18. It is the world's largest livestock exhibition and the largest Rodeo event and expected to draw over 2 million visitors. [Xinhua]

A girl plays with a deer at the 2013 Houston Livestock Show and Rodeo in Houston, the United States, Feb. 25, 2013. The 2013 Houston Livestock Show and Rodeo kicked off on Monday and runs through March 18. It is the world's largest livestock exhibition and the largest Rodeo event and expected to draw over 2 million visitors. [Xinhua]