Walker the polar bear on his third birthday at the Highland Wildlife Park on December 7, 2011 in Kingussie, Scotland. (Photo by Jeff J. Mitchell/Getty Images)

A dog called Oscar has laid claim to the title of the animal kingdom's most intrepid explorer after visiting famous landmarks around the world. His travels include five continents, 29 countries and stopping off everywhere from the Eiffel Tower to the Taj Mahal.

“F U 2”. (Photo and comment by EvoLNoMiS)

“The Dark Hedges”. (Photo by Matthias Haker)

“É proibido proibir”. (Photo by Thais Nuzzi)

Over 60 minutes of relaxing, piano music to sleep and study!

2 Hours Music For Meditation and Relaxation Part 3.

Grumpy Cat attends the World Premiere Of "Cinderella" on Sunday, March 1, 2015, in Los Angeles. (Photo by Todd Williamson/Invision/AP)