Giant panda Jianjian (R) and Kangkang eat a birthday "cake" in Macao, south China, June 26, 2018. The twin brothers celebrated their second birthday on Tuesday. A female panda Xinxin gave birth to the pair of male twin cubs on June 26, 2016. (Xinhua/Cheong Kam Ka)
Giant panda Kangkang eats a birthday "cake" in Macao, south China, June 26, 2018. The twin panda brothers Jianjian and Kangkang celebrated their second birthday on Tuesday. A female panda Xinxin gave birth to the pair of male twin cubs on June 26, 2016. (Xinhua/Cheong Kam Ka)
Female giant panda Xinxin eats bamboo stems in Macao, south China, June 26, 2018. The twin panda brothers Jianjian and Kangkang celebrated their second birthday on Tuesday. Xinxin gave birth to the pair of male twin cubs on June 26, 2016. (Xinhua/Cheong Kam Ka)
Giant panda Jianjian eats bamboo in Macao, south China, June 26, 2018. The twin panda brothers Jianjian and Kangkang celebrated their second birthday on Tuesday. A female panda Xinxin gave birth to the pair of male twin cubs on June 26, 2016. (Xinhua/Cheong Kam Ka)
Photo taken on June 26, 2018 shows giant panda Jianjian (R), Kangkang (C) and their mother Xinxin in Macao, south China. The twin brothers Jianjian and Kangkang celebrated their second birthday on Tuesday. Xinxin gave birth to the pair of male twin cubs on June 26, 2016. (Xinhua/Cheong Kam Ka)