A panda enjoys a special cake made of ice and decorated with bamboo shoots, apples and carrots in Haikou, Hainan Province. (Photo: Hainan Tropical Wildlife Park and Botanical Garden)

A panda enjoys a special cake made of ice and decorated with bamboo shoots, apples and carrots in Haikou, Hainan Province. (Photo: Hainan Tropical Wildlife Park and Botanical Garden)

A black bear takes a shower to cool itself off in Haikou, Hainan Province. (Photo: Hainan Tropical Wildlife Park and Botanical Garden)

A black bear takes a bath to cool itself off in Haikou, Hainan Province. (Photo: Hainan Tropical Wildlife Park and Botanical Garden)

A black bear takes a bath to cool itself off in Haikou, Hainan Province. (Photo: Hainan Tropical Wildlife Park and Botanical Garden)

Ostriches eat watermelons in Haikou, Hainan Province. (Photo: Hainan Tropical Wildlife Park and Botanical Garden)

Macaques eats an ice cube in Haikou, Hainan Province. (Photo: Hainan Tropical Wildlife Park and Botanical Garden)

A macaque eats an ice cube in Haikou, Hainan Province. (Photo: Hainan Tropical Wildlife Park and Botanical Garden)

An elephant eats a watermelon in Haikou, Hainan Province. (Photo: Hainan Tropical Wildlife Park and Botanical Garden)