giantpandaphotos: Su Shan celebrates Tai Shan’s ninth birthday at Dujiangyan in Sichuan, China, on July 9, 2014. Tai Shan and ALL of the pandas at Dujiangyan receive special “birthday cakes” to celebrate his special day! © Annette Yuen / Pandas

giantpandaphotos: Su Shan celebrates Tai Shan’s ninth birthday at Dujiangyan in Sichuan, China, on July 9, 2014. Tai Shan and ALL of the pandas at Dujiangyan receive special “birthday cakes” to celebrate his special day! © Annette Yuen / Pandas

giantpandaphotos: Su Shan celebrates Tai Shan’s ninth birthday at Dujiangyan in