Khan, a five-year-old male White Bengal tiger, looks on inside an open-air cage at the Royev Ruchey zoo in Krasnoyarsk, Russia, October 21, 2016. (Photo by Ilya Naymushin/Reuters)
A man looks at the description of a sculpture depicting 17-year-old male chimpanzee Jaska, by Gillie and Mark, in London, Tuesday, September 20, 2022. (Photo by Vadim Ghirda/AP Photo)
Almost two years old male baby orang-utan Dalai looks on in the zoo in Dresden, Germany, 30 March 2017. Dalai was born to mother Daisy in June 2016. (Photo by Filip Singer/EPA)
Female panda Tian Tian makes her first appearance in front of the media since arriving from China on December 12, 2011 in Edinburgh, Scotland. (Photo by Jeff J. Mitchell/Getty Images)
Buyan, a male Siberian brown bear, is given a shower by a zoo employee in his enclosure at the Royev Ruchey zoo in Russia's Siberian city of Krasnoyarsk June 24, 2014. The Siberian city has been experiencing temperatures of around 30 degrees Celsius over the last week. (Photo by Ilya Naymushin/Reuters)
Nine-day old male Indian rhinoceros Jari walks beside his 18-year old mother Quetta in an outdoor enclosure at the zoo in Basel September 18, 2012. Jari was born last Monday weighing around 60 kilos (132.3 pounds). REUTERS/Arnd Wiegmann