Pigs make their way through a snowy landscape near the Alpine village of Schruns, Austria. An unusual cold snap caused snowfall in higher regions of the Austrian

Alps.

Pigs make their way through a snowy landscape near the Alpine village of Schruns, Austria. An unusual cold snap caused snowfall in higher regions of the Austrian

Alps.

An African Lion known as Jambo watches his mate Kuchani leap for a bungee ball at Sydney's Taronga

Zoo.

An African Lion known as Jambo watches his mate Kuchani leap for a bungee ball at Sydney's Taronga

Zoo.

A Slow Loris eyes a fly at a wildlife sanctuary center in Ratchaburi province, Thailand.

A Slow Loris eyes a fly at a wildlife sanctuary center in Ratchaburi province, Thailand.

A Pig Monkey mama carries her young one out of the shade and into the sun at the zoo in

Osnabrueck, Germany.

A Pig Monkey mama carries her young one out of the shade and into the sun at the zoo in

Osnabrueck, Germany.

Puffins stand on Eastern Egg Rock, Maine, where a record 72 nesting pairs were recorded last year. The

Project Puffin Visitor Center has quickly become a popular midcoast Maine attraction.

Puffins stand on Eastern Egg Rock, Maine, where a record 72 nesting pairs were recorded last year. The

Project Puffin Visitor Center has quickly become a popular midcoast Maine attraction.

The 3-day-old seal pup Leo nuzzles its mother Pandorra in the basin of their outdoor pen at the

Daehlhoelzli zoo in Berne, Switzerland.

The 3-day-old seal pup Leo nuzzles its mother Pandorra in the basin of their outdoor pen at the

Daehlhoelzli zoo in Berne, Switzerland.

A panda lies beside her 4-week old cub at the giant panda breeding program at Changdu Research Base

in China.

A panda lies beside her 4-week old cub at the giant panda breeding program at Changdu Research Base

in China.

A harris hawk approaches a landing during a falconry demonstration at the Alameda garden in

Pontevedra City, northwestern Spain.

A harris hawk approaches a landing during a falconry demonstration at the Alameda garden in

Pontevedra City, northwestern Spain.

Ducks and seagulls frolic in the National Mall near the U.S. Capitol on a rainy day in Washington, D.C.Ducks and seagulls frolic in the National Mall near the U.S. Capitol on a rainy day in Washington, D.C.

A 2-day-old hippopotamus calf swims with its mother in an open-air moated enclosure at the zoological gardens in the eastern Indian city of

Kolkata.

A 2-day-old hippopotamus calf swims with its mother in an open-air moated enclosure at the zoological gardens in the eastern Indian city of

Kolkata.

Sisi, a 27-year-old orangutan, looks out of its enclosure in the Manila Zoo.

Sisi, a 27-year-old orangutan, looks out of its enclosure in the Manila Zoo.

The 4-month-old orangutan, Chelin, plays with her mother Inah, at the Schmutzer primate center at

the Ragunan Zoo in Jakarta. Indonesia's wild orangutans are endangered due to poaching, illegal

logging activity and forest fires.

The 4-month-old orangutan, Chelin, plays with her mother Inah, at the Schmutzer primate center at

the Ragunan Zoo in Jakarta. Indonesia's wild orangutans are endangered due to poaching, illegal

logging activity and forest fires.

Three Sacred Ibises graze among the blooms in Namaqualand, Africa. Ibises were once revered in Egypt since Thoth, the Egyptian god of knowledge,

was believed to take the form of these birds.

Three Sacred Ibises graze among the blooms in Namaqualand, Africa. Ibises were once revered in Egypt since Thoth, the Egyptian god of knowledge,

was believed to take the form of these birds.

Freddie, a Jack Russell, rides Daisy, a Shetland pony, in Flaxley, U.K.

Freddie, a Jack Russell, rides Daisy, a Shetland pony, in Flaxley, U.K.

Ben, a schnauzer with a droopy handlebar mustache, frolics at

the Jupiter (Fla.) dog park.

Ben, a schnauzer with a droopy handlebar mustache, frolics at

the Jupiter (Fla.) dog park.

An Asiatic black bear kicks back and relaxes at Ueno Zoo in Tokyo.

An Asiatic black bear kicks back and relaxes at Ueno Zoo in Tokyo.

A flock of wild geese flies in formation with the ultra-light plane of Frenchman Christian Moullec during a training flight in Lodrino, Switzerland.

A flock of wild geese flies in formation with the ultra-light plane of Frenchman Christian Moullec during a training flight in Lodrino, Switzerland.

An anteater carries her 1-week-old cub on her back at Cali's Zoo. It is the first time that this endangered

species has bred in captivity in Colombia.

An anteater carries her 1-week-old cub on her back at Cali's Zoo. It is the first time that this endangered

species has bred in captivity in Colombia.

African penguins swim after being treated at the South African Foundation for the Conservation of Coastal Birds rehabilitation center following an oil

spill.

African penguins swim after being treated at the South African Foundation for the Conservation of Coastal Birds rehabilitation center following an oil

spill.

Merlin, a 2-year-old Bornean orangutan, looks at visitors during an afternoon feeding session at the

Singapore Zoo.

Merlin, a 2-year-old Bornean orangutan, looks at visitors during an afternoon feeding session at the

Singapore Zoo.

Rare and endangered snow leopard kittens Tom and Jerry, the first born at the Los Angeles Zoo in 22

years, went on public display on Sept. 7.

Rare and endangered snow leopard kittens Tom and Jerry, the first born at the Los Angeles Zoo in 22

years, went on public display on Sept. 7.

A Cocker Spaniel gets ready for a canine beauty contest in Bucharest, Romania.

A Cocker Spaniel gets ready for a canine beauty contest in Bucharest, Romania.

A mynah bird smokes in Zhengzhou, China. Its owner said the bird took up the habit after he saw

him smoking.

A mynah bird smokes in Zhengzhou, China. Its owner said the bird took up the habit after he saw

him smoking.