On a rainy morning in the Palisades neighborhood, two Labradors, Ricky Bobby and Samantha, play tug of war with a ball toy on a park path in Washington, DC, Tuesday, December 2, 2014. (Photo by Melina Mara/The Washington Post)

A composite image shows a small owl sitting in the snow in Ansung City, Gyeonggi province, South Korea, December 4, 2014. Snow continued to be forecast in the region on December 4. (Photo by Kim Jae-Sun/EPA)

A small owl yawns as it sits in the snow in Ansung City, Gyeonggi province, South Korea, 04 December 2014. (Photo by Kim Jae-Sun/EPA)

Jaymee Findlay, Cissna Park, uses her mouth to feed a graham cracker to Jack Frost, one of 12 reindeer at Hardy's Reindeer Ranch in Rantoul, Ill., on Monday December 1, 2014. Findlay was part of a group at the facility for the reindeer experience tour where visitors can feed, shoot photos, pet and learn about the animals. (Photo by Rick Danzl/AP Photos/News-Gazette)

Indonesian vets show two of four three-week-old Bengal tiger cubs at the zoo in Medan, North Sumatra province, Indonesia, December 1, 2014. The mother named Wesa, 8, gave birth to four Bengal tigers at the zoo on November 7. (Photo by Dedi Sahputra/EPA)

Flamingos are seen in a nature reserve park in Panyu district south of Guangzhou, Guangdong province, November 30, 2014. (Photo by Alex Lee/Reuters)

A polar bear plays with a carton box presented to it during its fourth birthday in Warsaw zoo December 2, 2014. (Photo by Kuba Atys/Reuters/Agencja Gazeta)

Emma the Maltese's fur blows in the wind as she rides in her owner's purse on 5th Avenue at Central Park in New York December 2, 2014. (Photo by Carlo Allegri/Reuters)

An electric eel (Electrophorus electricus) is pictured in this undated handout photo obtained by Reuters December 4, 2014. Electric eels can unleash a potent electrical jolt to wallop their hapless prey. But this zap is not used merely to stun other fish. A new study shows that the eels use it to exert a form of remote control over their victims, causing fish that may be hiding to twitch, thus exposing their location, or inducing involuntary muscle contraction to incapacitate their prey. (Photo by Kenneth Catania/Reuters)

Port Macquarie Camel Safari co-owner Ken Towle, 56, feeds one of his camels a carrot treat with his mouth after a day carrying tourists for rides alongside the Pacific Ocean on Lighthouse Beach, north of Sydney, December 4, 2014. For 25 years camel rides on the beach have given visitors to Australia's holiday coast a rare experience available only in a handful of locations in the country. Australia's long history with the 'ships of the desert' goes back to the 1800s when they were imported from Afghanistan and India for use as transportation across Australia's vast deserts before being released into the wild following their replacement by motorised transport. (Photo by Jason Reed/Reuters)

Baby rhinoceros Savita enjoys a leaf as her mother Sani looks on, November 29, 2014 at the Wilhelma zoo in Stuttgart, southern Germany. Savita was born at the zoo two months ago. (Photo by Michael Latz/AFP Photo/DPA)

A new-born Orangutan (Pongo abelii) baby is held by her 12-year-old mother Jula (R) from Munich's Zoo on December 1, 2014 in the monkey-house at Budapest Zoo in the Hungarian capital. The monkey baby was born on November 24. (Photo by Attila Kisbenedek/AFP Photo)

Antelopes lock horns in a playful fight at Lucknow Zoological Gardens on December 2, 2014 in Lucknow, India. (Photo by Azam Husain/Barcroft India)

Undated handout photo issued by Folly Farm Adventure Park and Zoo in Pembrokeshire of ring-tailed lemurs trying to rip open a cracker inside their enclosure, which has been decorated by the park keepers with festive treats in the run up to Christmas. (Photo by James Davies/PA Wire/Folly Farm Adventure Park and Zoo)

A small hedgehog at the hedgehog ward in Neuzelle, Germany, 2 December 2014. For five years Simone and Klaus Hartung have been running a private hedgehog ward. The couple takes care of injured, sick, or very small hedgehogs. 20 prickly friends will be spending the winter here. Some are already in hibernation, wrapped up between warm strips of paper. This coming spring they will all be sent back into the wild. According to Simone Hartung, a hedgehog must weigh at least 500 grams before it can begin hibernating, in order to survive the winter. (Photo by Patrick Pleul/ZUMA Wire/DPA)

This inquisitive creature looks like hes sure that bird is the word – after appearing to be absorbed in a bird spotters guide. The tiny Lappmeisen bird – native to Norway – looks engrossed in the young twitchers book – and appears keen to read about himself. But the humorous picture is the clever work of Norwegian father and son Geir Arne and Skjalg-Helmer Vian – who spent hours setting up the shot. (Photo by Caters News)

Red Panda male cub “Bambo” (L) and his mother “Lobke” stroll through their enclosure at the zoo in Dresden, eastern Germany on December 5, 2014. The animal was born on July 12, 2014. (Photo by Arno Burgi/AFP Photo/DPA)

A brave bear turned photographer when she was seen playing with a camera in these incredible pictures. While bears are known for hibernating in the forests during the winter months, this cuddly creature was keen to get behind the camera as well as in front of it. Photographer Marc Latremouille snapped the rare moment in September when he was exploring Provincial Park in Ontario, Canada. (Photo by Marc Latremouille/Caters News)

An adorable tiger cub has been adopted by a dog – after its mother abandoned it. The lone tiger was rejected by its mother at a zoo in Indore, India – forcing keepers to look for a surrogate mother to feed the dog. And after introducing the cub to Genie, the black labrador, she instantly took to the cub. (Photo by Caters News)

In this picture provided by the Prague Zoo and taken on, Monday December 1, 2014, shows three of the newly born cheetah quadruplets yawning. The zoo says the four who have been born on November 21, 2014 have survived the most critical period after the birth and their mother, the three-year-old Savannah, is taking good care of them. (Photo by Petr Hamernik/AP Photo/Zoo Praha)

If this majestic dove thought it was safe from predators perching on the branch of a tree, it was wrong – and became supper for a baby python. Ranger Marc Lindsay Rea came across the incredible sight as he drove through the Madikwe Game Reserve, in South Africa. The unfortunate dove had taken refuge on the branch of a buffalo thorn tree – presumably thinking it was a perfect lookout point to spot predators. (Photo by Marc Lindsay/Caters News)

A sheep stands amidst ice covered plants on the Hohen Meissner mountain 750 meters above sea level near Hessisch Lichtenau, northeast of Frankfurt, Germany, Tuesday, December 2, 2014. The temperature in this area is around one degree Celsius below zero (30 degrees Fahrenheit). (Photo by Uwe Zucchi/AP Photo/DPA)

A camel feeds freshly cut willow at the zoo in Krefeld, northwestern Germany, Tuesday, December 2, 2014. (Photo by Roland Weihrauch/AP Photo/DPA)

This handout picture taken by Wakayama Adventure World on December 3, 2014 shows twin giant panda babies, born at the Wakayama Adventure World zoo at Shirahama in Wakayama prefecture, western Japan. The twins came into the world weighing less than 200 grammes each. Fourteen-year-old Rauhin mated with 22-year-old Yong Ming in July and gave birth to healthy twin cubs. (Photo by AFP Photo/Wakayama Adventure World)

This handout picture taken by Wakayama Adventure World on December 3, 2014 shows female giant panda Rauhin holding one of twin giant panda babies at the Wakayama Adventure World zoo at Shirahama in Wakayama prefecture, western Japan. (Photo by AFP Photo/Wakayama Adventure World)

These roar-some images show the moment a pack of lions took on an angry crocodile in a vicious fight over food. Spotted narrowly avoiding the snapping jaws of the deadly croc, the formidable foes are seen competing head-to-head in an epic battle for feeding rights. After noticing the corpse of a dead elephant, the brave croc dared to enter the lions territory in an effort to get a piece of the action. (Photo by Caters News)

This is the incredible moment a sperm whale gives birth, with several midwives escorting the newborn to the surface for the babys first breath. The footage and pictures show the pregnant mother swimming among a pod of the normally shy animals in the Azores. But suddenly the female gives birth, with several other whales surrounding her. Quickly the group usher the newborn towards the surface as the weak mother watches on. (Photo by Kurt Amsler/Caters News)

A 10-day old eastern Angolan colobus monkey is held by a member of the troop at the San Diego Zoo's Lost Forest on Tuesday, December 2, 2014. This is the 20th offspring for mother Lulu, whose name means pearl in Swahili. This new baby was born on November 21. (Photo by Ken Bohn/AP Photo/San Diego Zoo)

A sad-looking elephant was forced to stand out in the rain – while others took shelter beneath a nearby tree. Its companions watched as the young male stared into the distance with a thunderstorm fast approaching. The unique shot was captured in the Serengeti National Park, Tanzania, by photographer Kelvin Zhang from Los Angeles in California, USA. Kelvin, who works as a scientist, was initially drawn to an acacia tree as he was also seeking shelter from the oncoming storm. (Photo by Caters News)

Jaya walks out with Kirana, Dari, and Indah at the Sumatran tiger enclosure at the Point Defiance Zoo & Aquarium on Thursday, December 4, 2014. The Sumatran tiger triplets born Oct. 8 weighting between two and half to three pounds. (Photo by Lui Kit Wong/AP Photo/The News Tribune)