This greedy piglet was isolated from the rest of its litter by the farmer who named it Hitler after it tried to grab all the food at feeding time. (Photo by R J Lewis/Getty Images). 1942

The Sphinx breed of cat “Adam vom Feisastern” of the German breeder Sabine Braeuer waits on a jury table during an annual International Pedigree Dog and Cat Show in Erfurt, Germany on June 10, 2012. (Photo by Jens Meyer/Associated Press)

Suren Manvelyan is a professional Armenian photographer who specializes in animal eye, human eye, macro, landscape, portrait and night spirit photos.

A Sumatran Tiger looks at visiting children from it's enclosure during the ZSL London Zoo's annual stocktake of animals on January 5, 2015 in London, England. The zoo's annual stocktake requires keepers to check on the numbers of every one of the 800 different animal species, including every invertebrate, bird, fish, mammal, reptile, and amphibian. (Photo by Dan Kitwood/Getty Images)

There’s no need to suspend your disbelief when viewing these stunning photographs – the exquisite images are the real-life interactions between humans and animals. (Photo by Katerina Plotnikova)

Goat herder Dana McGregor's goats Pismo, left, and Goatee surf at San Onofre State Beach, Calif, on July 11, 2012. McGregor started taking Pismo's mother Goatee to the beach, and it wasn't long before she was on a surfboard. When Pismo was born, McGregor put her on a board too, and she was a natural, he says. (Photo by Rod Veal/The Orange County Register via AP)

Nikolai Tolstyh takes photos of paper animal silhouettes in a natural setting. The combination is surprisingly perfect: the surroundings provide both color for the cutout and a scene to frame the animal.

Brazilian Tapir Tique is treated to a nice cold shower by the zoo keeper at Taronga Zoo on January 8, 2013 in Sydney, Australia. Temperatures are expected to reach as high as 43 degrees around Sydney today. (Photo by Marianna Massey)