A sentry of the Welsh Guards at Windsor Castle, Windsor, Berkshire, England, United Kingdom, Europe

Guards at the entrance of the Royal Palace, Rabat, Morocco

Queen's Guard at Buckingham Palace, City of Westminster, London, England

Sign warning of thin ice on a frozen lake in Linden Ridge, Winnipeg, Manitoba, Canada

Swiss Guards take part in a swearing-in ceremony in San Damaso Courtyard, Vatican City, Rome, Lazio, Italy

Woman responsible for ensuring safety and good behavior of visitors at the Viewpoint, Harrat volcanic plateau, AlUla, Medina Province, Saudi Arabia

Net-casting spider (Deinopsis ravida) waiting with net, Hopkins Creek, New South Wales, Australia, Pacific

Net-casting spider (Deinopsis ravida) waiting with net, Hopkins Creek, New South Wales, Australia, Pacific

Hispanic doctor examining x-rays

Hispanic doctor talking on cell phone examining x-ray

Mixed race security guard watching monitors in control room

Dwarf Mongoose

Lynx attentively observes the surroundings, Lynx, Bad Schandau, Saxon Switzerland National Park, Saxon Switzerland, Elbe Sandstone, Saxony, Germany

Lynx attentively observes the surroundings, Lynx, Bad Schandau, Saxon Switzerland National Park, Saxon Switzerland, Elbe Sandstone, Saxony, Germany

Prague Castle Guard, Hradcany, Prague, Czech Republic

Adult male Jaguar (Panthera onca), close-up, Costa Rica