Feili, the chimpanzee, eats frozen fruits at the Zhengzhou Zoo on July 24, 2018. Zhengzhou, Henan Province, located in central China, is suffering from a heat wave, and the Zhengzhou Zoo has taken measures to help the animals stay cool by spraying water, placing ice cubes and cold food in their enclosures. (Photo: Xinhua)

Staff members shear an alpaca to help it cool off during the heat wave at the Zhengzhou Zoo on July 24, 2018. (Photo: Xinhua)

A macaque rips open the packaging for a popsicle at the Zhengzhou Zoo on July 24, 2018. (Photo: Xinhua)

A gorilla eats a popsicle at the Zhengzhou Zoo to cool off during the heat wave on July 24, 2018. (Photo: Xinhua)

Red deer enjoy water being sprayed into their enclosure at the Zhengzhou Zoo on July 24, 2018. (Photo: Xinhua)

A black-capped capuchin feeds on a tomato at the Zhengzhou Zoo on July 24, 2018. (Photo: Xinhua)