Russian model Irina Shayk in the last decade of August 2023 sent fans wild with these shots of her posing topless on rocks. (Photo by irinashayk/Instagram)

These young sloth bears hitch a ride on their mother's back as she forages for food in the Ranthambhore Tiger Reserve in the Indian state of Rajasthan in May 2023. (Photo by Aditya Singh/Solent News)

A sun bear reacts to triple-digit temperatures at the Henry Doorly Zoo in Omaha, Nebraska, where the temperature reached 103 degrees Fahrenheit on July 6, 2012. (Photo by Nati Harnik/Associated Press)

Competitors bear more than their bikinis during a spring break bikini contest at Summers' in Fort Lauderdale, Florida, USA circa 1985. (Photo by Nik Wheeler/Corbis via Getty Images)

A child looks at a polar bear swimming under a water in its enclosure on a hot summer day at Prague Zoo, Czech Republic, July 30, 2015. (Photo by David W. Cerny/Reuters)

A vendor holds a teddy bear for sale on Valentine's Day in Port-au-Prince, Haiti, Monday, February 14, 2022. (Photo by Joseph Odelyn/AP Photo)

TCU Horned Frogs twirler performs at halftime of the game against the Baylor Bears at Amon G. Carter Stadium in Fort Worth, Texas, USA on November 6, 2021. (Photo by Kevin Jairaj/USA TODAY Sports)

Members of the Coney Island Polar Bear Club warm up before swimming at the beach at Coney Island in New York, December 15, 2013. (Photo by Eric Thayer/Reuters)