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.

Lightning streaks across the sky as lava flows from a volcano in Eyjafjallajokul April 17, 2010. (Photo by Lucas Jackson/Reuters)

Here’s a series of imaginary island illustrations created by concept artist Pierre-Antoine Moelo aka Péah.

Evelyn Ramirez and Juan Manuel enjoy posting adorable photos of their pit bull on Instagram. However, their photos seem to be gaining traction online, thanks to their pet’s dapper get-ups.

Face Off is an American reality television game show on the Syfy cable network in which a group of prosthetic makeup artists compete against each other to create prostheses such as those found in science fiction and horror films.

Dillon was born in the spring of 2013. He lived for four months on the streets near Boston, MA before being scooped up by the Animal Rescue League of Boston.

Seth Casteel is an award-winning photographer and the New York Times Best Selling Author of Underwater Dogs. His new book, Underwater Puppies, was published September 16, 2014. Photo: “Underwater Puppies”: Popcicle. (Photo by Seth Casteel)

Yaks head towards the Everest base camp in Solukhumbu District April 28, 2014. (Photo by Navesh Chitrakar/Reuters)