Two hippopotamus are fed with pumpkins at the Hanoi Zoo, in Hanoi, Vietnam, 25 October 2018. The zoo has been the home for more than 800 animals of over 90 different species, including three hippopotamus, since it was built in 1976. (Photo by Luong Thai Linh/EPA/EFE)

Abbey Clancy attends Lifetime's launch of Britain's Next Top Model airing tonight at 9pm on Lifetime on March 16, 2017 in London, England. (Photo by PA Wire)

A hippopotamus is sprayed with water on a hot summer day at Anna National Zoological Park in Chennai, India on April 26, 2017. (Photo by Arun Sankar/AFP Photo)

A lizard is seen hunting for fish during the daytime on May 04, 2017 in West Sumatra, Indonesia. (Photo by Riau Images/Barcroft Images)

Bella Thorne out and about, Los Angeles, USA on June 14, 2017. (Photo by Broadimage/Rex Features/Shutterstock)

Avigail Collins and Daisy Lowe attend Liudmila X Avigail Collins Launch Party on July 13, 2017 in London, England. (Photo by Kintzing.com for Liudmila x Avigail Collins/SilverHub/Rex Features/Shutterstock)

Courtney Stodden attends the finale of “Celebs Go Dating” TV show filming at Dirty Martini in London, England on July 26, 2017. (Photo by Beretta/Sims/Rex Features/Shutterstock)

A model presents a creation from the Fall/Winter 2017/18 collection by designer Lena Hoschek during the Mercedes-Benz Fashion Week Berlin, in Berlin, Germany, 17 January 2017. The Mercedes-Benz Fashion Week Berlin runs from 17 to 20 January. (Photo by Clemens Bilan/EPA)