Chinese panda Le Bao bites bread, leaning on a birthday cake made with ice in a celebration for his fourth birthday on July 28, at the Everland amusement park in Yongin, South Korea, Sunday, July 10, 2016. A pair of giant pandas arrived in South Korea on March 3, 2016, following an agenda about panda research cooperation in a meeting between Chinese President Xi Jinping and South Korean President Park Geun-hye in 2014. (Photo by Ahnn Young-joon/AP Photo)
A tiger refreshes with a block of ice containing bits of meat in Rome's Bioparco zoo, Wednesday, July, 13, 2016. (Photo by Andrew Medichini/AP Photo)
A Tibetan antelope in Hoh Xil, Qinghai, China on July 14, 2016. Over the past decade ecological degradation of the fragile Sanjiangyuan national park eco-system has been curbed through conservation efforts. (Photo by Xinhua/Barcroft Images)
A mother Bengal tiger and her cubs at Ranthambore tiger reserve in Rajasthan, India on July 14, 2016. Having made a kill the day before, the mum and her well-fed youngsters were in good spirits – even taking time out to go for a quick swim. (Photo by Andy Rouse/Barcroft Images)
Chevy, front right, pulls to the front of the pack to win the Rescue the Animals Dachshund Races on Thursday, July 14, 2016, at the Nelson Park Festival Gardens in Abilene, Texas. (Photo by Tommy Metthe/Abilene Reporter-News via AP Photo)