Revelers perform during the Myths and Legends parade in Medellin, Antioquia department, Colombia on December 8, 2021. (Photo by Joaquin Sarmiento/AFP Photo)

A man rides his motorcycle as the sun sets in Basra, Iraq, Monday, May 9, 2022. (Photo by Nabil al-Jurani/AP Photo)

Children play amid icebergs on the beach in Nuuk, Greenland, June 5, 2016. (Photo by Alister Doyle/Reuters)

A mahout bathes his elephant in the river Sabarmati on a hot summer day in Ahmedabad, India May 21, 2017. (Photo by Amit Dave/Reuters)

Mourning woman. (Photo by Rich Legg/Getty Images/iStockphoto)

A Border Collie competes in the Flyball during The World Dog Games at Acer Arena on October 31, 2009 in Sydney, Australia. (Photo by Brendon Thorne/Getty Images)

Most pet cats will become timid or defensive when outdoors, but not Millie – after being adopted by her mountain-climbing owner Craig Armstrong, Millie has become a feline hiking and mountain-climbing legend.

Tokyo, “Electric City”. August 24, 2009. (Photo by Caribb; Source: Flickr)