Three-legged Chihuahua Stella Star poses for a portrait during Mercedes Benz Swim Fashion Week in Miami, July 18, 2014. (Photo by Carlo Allegri/Reuters)

Two penguins dive for a fish in the zoo in Frankfurt, Germany, Friday, July 25, 2014. (Photo by Michael Probst/AP Photo)

Darren Weir trained galloper (stable nick name, Star) enjoys a wash down after a Ballarat trackwork session at Ballarat Turf Club on July 23, 2014 in Ballarat, Australia. (Photo by Vince Caligiuri/Getty Images)

Two young golden-headed lion tamarins, photographed through a glass window, play in their compound in the zoo in Wuppertal, Germany, 23 July 2014. The twins of the endangered monkey species were born in the zoo on 30 June. (Photo by Matthias Balk/EPA)

A man lies on a heap of fodder, which was removed from a sugarcane field, on a cart pulled by a bull in Muzaffarnagar in the northern Indian state of Uttar Pradesh July 19, 2014. With this year's monsoon rains several weeks late, the world's second-largest sugar and rice producer is on the verge of widespread drought in the face of a developing Pacific Ocean weather event known as El Nino, which is often associated with drought in South Asia. (Photo by Anindito Mukherjee/Reuters)

Paramilitary policemen try to help a stranded whale back into the ocean as Typhoon Rammasun hits Yangjiang, Guangdong province July 19, 2014. The whale was successfully returned to the ocean after two hours from efforts by the local police forces, local media reported. The super typhoon has killed at least 14 people in China since making landfall on Friday afternoon, state media said on Saturday, after hitting parts of the Philippines and leaving 77 dead. (Photo by Reuters/Stringer)

A bull stands inside a shop selling clothes at Varanasi, in the northern Indian state of Uttar Pradesh, June 20, 2014. (Photo by Danish Siddiqui/Reuters)

Tosta, a Staffordshire bull terrier cross, shakes off water after a swim in the sea during the hot summer day by Brighton pier in southern England July 23, 2014. (Photo by Luke MacGregor/Reuters)

A cyclist with his dog in a backpack climbs the race route towards the finish line in Risoul prior to the arrival of the riders in the fourteenth stage of the Tour de France, on Jule 19, 2014. (Photo by Peter Dejong/Associated Press)

A male Siberian tiger swims in a pool in the zoo in Wuppertal, Germany, 23 July 2014. (Photo by EPA/Matthias Balk)

Young spectacled bear (Tremarctos ornatus) “Ojo” explores his enclosure at the Zoo in Zurich, Switzerland, 16 July 2014. “Ojo” was born on 16 February 2014. (Photo by Steffen Schmidt/EPA)

Female pygmy hippopotamus “Anais” and and her young “Onong” cool off at the Zoo in Zurich, Switzerland, 16 July 2014. “Onong” was born on 16 May 2014. (Photo by Steffen Schmidt/EPA)

A Siberian tiger at a photographer for getting too much in its face during the presentation of two new Siberian tigers at Cabarceno Natural Reserve in Cabarceno, northern Spain, 21 July 2014. (Photo by Pedro Puente Hoyos/EPA)

A handout picture released by the Zoo of Rostock on 20 July 2014 shows a Short-beaked echidna (lat.: Tachyglossus aculeatus lawesii) sitting in the hands of a keeper at the zoo of Rostock, Germany, 08 July 2014. The extremely rare breed born early 2014 is hand-fed by the zoo keepers since April 2014. (Photo by Axel Dobberti/EPA/Zoo Rostock)

A Roman dyad carriage with four Mini Shetland Ponys participates in a race at the horse fair “Eurocheval” in Offenburg, Germany, 23 July 2014. The Eurocheval is one of the biggest horse fairs in Europe, according to the organizer. (Photo by Patrick Seeger/EPA)

An ostrich is sprayed with water for cooling at the Zoo of Caocao Park on July 20, 2014 in Bozhou, Anhui Province of China. According to the weather forecast, the temperature will be above 35 degrees Celsius (95 degrees Fahrenheit) in Huanghuai and Jianghuai plains. (Photo by ChinaFotoPress/ChinaFotoPress via Getty Images)

Alinga, the female koala which was born on October 19, 2013 and left her mother's pouch in May 2014 rides on her mother's back in the Zoo parc of Beauval in St Aignan on July 19, 2014. It is a rare koala birth in France. (Photo by Guillaume Souvant/AFP Photo)

Reptile Manager Paula Swanson sprays down “Jake”, a galapagos tortoise at the Phoenix Zoo, Thursday, July 24, 2014 in Phoenix. With Phoenix-area daytime highs hovering around 110, zoo officials use a variety of frozen snacks and spring to keep the animals cool. (Photo by Matt York/AP Photo)

An Indian villager holds up a Chinese pangolin at Dogaow Village near Kaziranga National Park, India's northeastern Assam state, on July 21, 2014. The Chinese pangolin (manis pentadactyla), a nocturnal mammal covered with keratin scales found across western South Asia into northern Indochina and parts of Southern China, are listed as an endangered species by the International Union for Conservation of Nature. (Photo by AFP Photo/Stringer)

A chimpanzee carries a bag while walking through the new monkey house of the Zoologischer Garten zoo in Magdeburg, eastern Germany, on July 17, 2014. A new tropical area of the zoo houses ten chimpanzees, flamingos, crocodiles and tropical fishes. (Photo by Jens Wolf/AFP Photo/DPA)

A polar bear plays with a red ball under water in its compound at the zoological garden in Wuppertal, Germany, Wednesday, July 23, 2014. (Photo by Matthias Balk/AP Photo/DPA)

Otters munch on frozen balls of ice encasing fish at the Detroit Zoo in Royal Oak, Michigan on Tuesday, July 22, 2014. As beastly high temperatures reach into the 90's in Metro Detroit, the animals at the Detroit Zoo are keeping cool with various environmental enrichment strategies including blocks of ice frozen around fruit or fish, mud pits, and an occasional romp in the sprinkler. (Photo by Daniel Mears/AP Photo/The Detroit News)

Pedestrians look at tropical fish displayed in a fish tank in the window of Sony's showroom in Tokyo's shopping district Ginza on July 25, 2014. Some 1,000 tropical fish, brought in from the waters around Japan's southern island of Okinawa, are displayed in the tank through August 31. (Photo by Kazuhiro Nogi/AFP Photo)

Baaaad move...mountain sheep being herded off the roadway by cyclist Brendan Cassidy who was escorting Marathon winner Eugene McCarthy, who lead the race for 26.2 miles, and finished in a time of 02:47:32 in the annual Run Killarney Festival, starting outside Sneem Village, through Molls Gap and into Killarney National Park. Over 2000 athletes competed in The Run Killarney festival, on Saturday, organised by Elite Management, with 3 great races – a full Marathon, Half Marathon and 10Km. (Photo by Valerie O'Sullivan)

A chimpanzee licks a lump of ice containing fruit in Barcelona Zoo, Spain, Friday July 25, 2014. Temperatures reached around 35 degrees Celsius (95 degrees Fahrenheit) and the high temperatures are expected to last several days. (Photo by Manu Fernandez/AP Photo)

Hummingbirds gather around a hummingbird feeder filled with sugar water, in a backyard in the San Fernando Valley section of the city of Los Angeles, July 17, 2014. Hummingbirds are among the smallest birds in the world with most species measuring between 7.513 cm (35 in). When hovering in mid-air the tiny avians flap their wings between 40 and 80 times per second. (Photo by Robyn Beck/AFP Photo)

Hummingbirds gather around a hummingbird feeder filled with sugar water, in a backyard in the San Fernando Valley section of the city of Los Angeles, July 17, 2014. (Photo by Robyn Beck/AFP Photo)

In a photo provided by the San Diego Zoo Safari Park, Okapi mother Ayana watches over her 2-week-old calf as he takes a break from nursing at the San Diego Zoo Safari Park in Escondido, Calif., Tuesday, July 22, 2014. The male calf, named Jackson, was born on July 6 and is spending time with his mother in the okapi barn at the Safari Park as he gets to know his surroundings. Okapi newborns can stand within 30 minutes of birth and nurse for the first time within an hour. They have the same coloring as an adult but have a short fringe of hair along the spine, which generally disappears by the time they are 12 to 14 months old. (Photo by Tammy Spratt/AP Photo, San Diego Zoo Safari Park)

A photo issued by ZSL Whipsnade Zoo of swamp deer cooling themselves in the lake at the zoo in Bedfordshire, on July 25, 2014. (Photo by Tony Margiocchi/PA Wire/ZSL)

A circus dog performs in costume during a free public show to protest Mexico City's ban on circus animals, other than horses and dogs, in Mexico City's main square, the Zocalo, Tuesday, July 22, 2014. Mexico's “circus wars” are heating up, with a growing movement to ban circus animals meeting rising anger from circus workers. Circuses say threats of violence against them have been posted online. (Photo by Rebecca Blackwell/AP Photo)

A clown performs with a dog in a lion's costume, during a free public show to protest Mexico City's ban on circus animals in Mexico City's main square, the Zocalo, on Jule 22, 2014. (Photo by Rebecca Blackwell/Associated Press)

A Chester Zoo handout photo of Selene, a rare pudu farm – the world's smallest species of deer, who has been born at Chester Zoo on July 21, 2014. (Photo by Steve Rawlins/PA Wire/Chester Zoo)