Participants dressed as zombies attend a traditional Zombie Walk in Prague, Czech Republic. (Petr David Josek/Associated Press)

The Port Elizabeth Herald reported Friday that Violet D’Mello of Aberdeen, Scotland, was attacked by cheetahs on April 28 while in a petting pen at a game reserve near Port Elizabeth in South Africa. She was attacked while trying to protect children from another group that was in the enclosure at the same time. One of two cheetahs in the enclosure grabbed a young girl, leaving her with scratches and cuts. D’Mello tried to calm the child and her brother, and ended up also being attacked. (Archibald D’Mello/Associated Press)

Nathan Fletcher riding what is generally considered by people in the surfing world as the heaviest wave ever ridden in Tahiti. (Barcroft Media)

A boy jumps into the water on the occasion of the season opening of public swimming pools in Munich, Germany. (Joerg Koch/dapd) Click image to zoom.

Freshly shaved alpacas are seen at Alpaca-Land farm in Goeming in the Austrian province of Salzburg. The annual shearing of Alpacas is done in the spring to make the animals more comfortable for the summer months, and it gives them plenty of time to grow a thick new coat before winter. (Kerstin Joensson/Associated Press) Click image to zoom.

A bear that wandered into a University of Colorado Boulder, dorm complex falls from a tree after being tranquilized by Colorado wildlife officials. Colorado University police spokesman Ryan Huff said the bear was likely 1-3 years old and weighed somewhere between 150-200 pounds. (Andy Duann/ACU Independent) Click image to zoom.

This image provided by NASA shows lava flows in the shape of coils located near the equatorial region of Mars. Analyzing high-resolution images of the region, researchers have determined the area was sculpted by volcanic activity in the recent geologic past. This is the first time such geologic features have been discovered outside of Earth. (NASA) Click image to zoom.

Children perform on unicycles at the Kaeson Kindergarden in Pyongyang, North Korea. (Vincent Yu/Associated Press) Click image to zoom.

Birds perch on a branch during a spring snowstorm in Pembroke, N.Y. A spring nor’easter packing soaking rain and high winds churned up the Northeast Monday morning, unleashing a burst of winter and up to a foot of snow in higher elevations inland, closing some schools and sparking concerns of power outages. (David Duprey/Associated Press) Click image to zoom.

An European shorthair cat plays with its booty in a graden in Berlin. Due to their ability to hunt mouses and other vermin, cats have been domesticated by humans at least 9,500 years ago. (WOLFGANG KUMM / AFP / Getty Images)