Colorado Gov. John Hickenlooper shows off his socks--one with Democratic presidential candidate Bernie Sanders and the other with Republican candidate Donald Trump – before entering his former brewpub for a book signing event to mark the release of his autobiography Thursday, May 26, 2016, in Denver. Hickenlooper, who is term-limited, is doing book talk rounds this week, reviving speculation that he is positioning himself to join Hillary Clinton's presidential campaign ticket. (Photo by David Zalubowski/AP Photo)

Attnedees dressed in Zombie outfits walk down the Gaslamp Quarter outside of the 2015 Comic-Con International in San Diego, California July 8, 2015. (Photo by Sandy Huffaker/Reuters)

A South American Coati licks a block of frozen fruits at Israel's Safari Zoo in Ramat Gan, north of the Mediterranean coastal city of Tel Aviv, as temperatures reach 35 degrees Celsius on July 13, 2023. (Photo by Jack Guez/AFP Photo)

England's full-back Freddie Steward dives across the line to score a try chased by Japan's wing Lomano Lemeki (L) during the France 2023 Rugby World Cup Pool D match between England and Japan at Stade de Nice in Nice, southern France on September 17, 2023. (Photo by Nicolas Tucat/AFP Photo)

South Korea's Hur Yoonseo and Lee Riyoung take part in the Free Routine segment of the Artistic Swimming Women's Duet competition at the 19th Asian Games in Hangzhou, China, Saturday, October 7, 2023. (Photo by Ng Han Guan/AP Photo)

Thousands of fireflies dance around Aurora Ghizzi Panizza, age 4, in the grounds of the 15th-century Castello di Torrechiara in Parma, Italy on July 16, 2022. (Photo by Alberto Ghizzi Panizza/Animal News Agency)

A pet dog reacts while wearing a “Voltes V” themed costume during a “Pawshion Show” to mark World Animal Day in Marikina City, Metro Manila, Philippines 04 October 2023. A village in Marikina enjoined owners and animal lovers to play dress-up with their pets and participate in a fashion-show themed activity to entertain the community on World Animal Day and mark the feast day of St. Francis of Assisi, the patron saint of animals in the Roman Catholic religion. (Photo by Rolex Dela Pena/EPA)

Japan's Naomi Osaka visits Lone Pine Koala Sanctuary ahead of the Brisbane International tennis tournament in Brisbane on December 29, 2023. (Photo by Patrick Hamilton/AFP Photo)