Allie, a 26-year-old bottlenose dolphin, swims with her newborn calf at Brookfield Zoo’s Seven Seas exhibit in Brookfield, Illinois on August 7, 2013. Allie gave birth on August 2 to the approximately 40-pound, 3-foot-long calf. UPI/Brian Kersey | License Photo

Latangi, a six day old Asian elephant calf, walks with her mother La Belle in the Ramat Gan Safari Park near Tel Aviv, Israel, August 7, 2013. Asian elephants are an endangered species.UPI/Debbie Hill | License Photo

A baby pudu deer was born May 3 at the Queens Zoo in New York. (Wildlife Conservation Society/Julie Larsen Maher)

A month-old addax antelope sits in some sand in its habitat at the Brookfield Zoo on July 2, 2013 in Brookfield, Illinois. The zoo saw the first birth this highly endangered species on June 7 and had another on June 22 with two more calves expected. The addax antelope is highly endangered with only 200 individuals alive in zoos and another 300 in the wild. UPI/Brian Kersey | License Photo

An 11-day-old giraffe calf explores his habitat at the Brookfield Zoo on July 2, 2013 in Brookfield, Illinois. Jasiri, a 7-year-old giraffe gave birth to the 173-pound, 5-foot-9-inch tall male calf on June 21, 2013 at the Zoo, which is located just outside of Chicago. UPI/Brian Kersey | License Photo

Three black and white ruffed lemurs sit with their mother in the Saint Louis Zoo’s Primate House in St. Louis on June 17, 2013. Born on May 14, 2013 the critically endangered species are unique to Madagascar. This birth is part of the Association of Zoos and Aquariums’ Ruffed Lemur Species Survival Plan (SSP), a program to manage a genetically healthy population of black and white ruffed lemurs in North American zoos. UPI/Saint Louis Zoo | License Photo

It was all about new experiences as the youngest member of the panda family, Xiao Liwu, got to play in the snow for the first time at the San Diego Zoo on March 19, 2012, in San Diego, California. The seven-month-old cub explored his snowy exhibit and had fun climbing all over mom Bai Yun, playfully nipping and wrestling with her in the snow. More than 15 tons of fresh snow was blown into the panda's exhibit early this morning as part of an enrichment surprise for the pandas. UPI/Ken Bohn/San Diego Zoo | License Photo

Patty, an endangered western lowland gorilla, is cradled by her mother Bana at the Lincoln Park Zoo on November 13, 2012 in Chicago. Patty was born in October, but guarded so closely by her mother that it took a month before the zoo's animal care staff to determine with certainty the infant was a female, announcing the results Tuesday. UPI/Brian Kersey | License Photo

This photo released by the Smithsonian's National Zoo on June 26, 2012 show the Zoo’s newest kori bustard chicks that were hatched on June 9 and 10 and have been hand-raising by keepers, June 27, 2012. UPI/Smithsonian National Zoo | License Photo

A female baby Coquerel's sifaka hangs onto her mother at the Saint Louis Zoo in St. Louis on March 6, 2012. An endangered lemur species from Madagascar, the baby was born at the Saint Louis Zoo's Primate House on January 16, 2012. For about a month, the baby held onto mom's belly but has recently "graduated" to riding on her back. UPI/Bill Greenblatt | License Photo

A baby chick king penguin is prepared for its daily weighing at the Penguin & Puffin Coast at the Saint Louis Zoo in St. Louis on January 18, 2012. The chick is being reared by its parents ÒFrancineÓ and ÒKaiju". A king penguin chick hatches after about 55 days, then its parents continue to keep it warm under their belly flap for 30-40 days until it grows too large to cover. They continue to share feeding duties for about eight months. It is not yet known if the chick is a male or female. This bird is one of the largest penguin species. As an adult, it weighs about 33 pounds, second only to the emperor penguin. UPI/Bill Grenblatt | License Photo

The Saint Louis Zoo has released this photo on August 15, 2011 of a African lion cub named Imani who was born on July 17, 2011. The mother lion is Cabara, age 5. The cub, who after six days appeared dehydrated, was removed from Big Cat Country for hand-rearing at the ZooÕs veterinary hospital. She appears to be healthy after three weeks of hand-feeding. In the past 25 years, the wild lion population has halved. Currently there are fewer than 25,000 lions surviving in Africa. UPI/Saint Louis Zoo | License Photo

A male black and white colobus monkey, shown with his mother, was born at the Saint Louis Zoo’s Primate House on May 20, it was announced June 21, 2011. The monkey is the first colobus to be born at the Zoo in 11 years. Colobus infants are born with all white hair and a pink face. In contrast, adults are primarily black, with white hair encircling their face and half of their tail. They have a distinctive mantle of long white hair extending from their shoulders around the edge of their back. Infants will change color gradually until they reach adult coloration at about six months. UPI/Saint Louis Zoo | License Photo

Baby ducks sit near the water as temperatures remain in the mid 90's for the second day in a row in Washington on June 9, 2011. The National Weather service has issued a heat advisory for the second day in a row and has warned of a heat index as high as 108. UPI/Kevin Dietsch | License Photo

The Saint Louis Zoo has announced that a black rhinoceros calf was born to first-time parents, mother Kati Rain and father Ajabu in St. Louis on January 14, 2011. Weighing 120-1/2 pounds, the little male is nursing well and being cared for by his mother, according to Zoo staff. This is the first black rhino calf to be born at the Saint Louis Zoo in 20 years. In all, eight black rhino calves have been born at the Zoo. The black rhino has experienced the most drastic decline of any rhino species. In 1970, it was thought there were about 65,000 black rhinos in Africa. By 1993, there were only 2,300 survivors in the wild. Black rhinos are heavily poached, because it is thought in many Asian countries that the rhino horn has medicinal uses. UPI/Saint Louis Zoo | License Photo

A clouded leopard cub, born on February 14, 2010, is seen at the Smithsonian's National Zoo's campus in Front Royal, Virginia on February 17. UPI/Mehgan Murphy/Smithsonian's National Zoo

A clouded leopard cub, born on February 14, 2010, is seen at the Smithsonian's National Zoo's campus in Front Royal, Virginia on February 17. UPI/Mehgan Murphy/Smithsonian's National Zoo

Baby burrowing owls are seen on August 18, 2009 at the Smithsonian's National Zoo in Washington. UPI/Mehgan Murphy/National Zoo | License Photo

Six Flags Discovery Kingdom's newest edition, a 145-lb., approximately 5-foot 10-inch inch tall male giraffe calf born on December 14, is pictured with his four-year-old mother Makali at Six Flags Discovery Kingdom, Vallejo, California, on December 23, 2009. UPI/Ken James

Six Flags Discovery Kingdom's newest edition, a 145-lb., approximately 5-foot 10-inch inch tall male giraffe calf born on December 14, is pictured with his four-year-old mother Makali at Six Flags Discovery Kingdom, Vallejo, California, on December 23, 2009. UPI/Ken James

A new infant Wolf's Guenon is seen at the Bronx Zoo in New York on December 2, 2009. UPI/Julie Larsen Maher/Bronx Zoo | License Photo

A crested tinamous is seen at the Smithsonian's National Zoo in Washington on November 3, 2009. It is expected to fledge around November 20. UPI/Mehgan Murphy/National Zoo | License Photo

Johari, a 2-month-old African cheetah, showed off her pearly whites at the San Diego Zoo's Wild Animal Park on July 31, 2009. The cub is one of four cheetahs being hand raised, born on May 24 and were rejected by their mother. UPI/Ken Bohn/San Diego Zoo.... | License Photo

A light-footed clapper rail, an endangered species endemic to Southern California marshlands, is fitted with an identification band in preparation for its release into the San Elijo Lagoon Ecological Reserve in San Diego County in California on June 16, 2009. Sixteen clapper rails that were hatched at the San Diego Zoo's Wild Animal Park, SeaWorld San Diego and the Chula Vista Nature Center earlier this year and introduced into the marshland as part of the U.S. Fish and Wildlife Service's clapper rail recovery program. The decade-old program has now released more than 220 light-footed clapper rails into Southern California marshlands between Santa Barbara and San Diego. (UPI Photo/Tammy Spratt/San Diego Zoo) | License Photo

Rep. John Sarbanes, D-MD, holds a 6-week-old serval cat after a news conference to introduce the "No Child Left Inside Act," on Capitol Hill in Washington on May 14, 2009. (UPI Photo/Roger L. Wollenberg) | License Photo

Three Sumatran tiger cubs play in the tiger exhibit at the San Diego Zoo's Wild Animal Park on March 25, 2009. The trio, born November 13, 2008, were only recently allowed in the big outdoor enclosure for public viewing. (UPI Photo/Ken Bohn/San Diego Zoo) | License Photo

An infant Francois' langur (Trachypithecus francoisi francoisi), holds onto its mother Pumpkin at the Lincoln Park Zoo on January 15, 2009 in Chicago. The Francois' langur infant was born at the zoo on January 12 and is part of an endangered species of primate native to the mountain jungles on the border between Vietnam and China. (UPI Photo/Brian Kersey) | License Photo

Five baby African hedgehogs are held by a worker in the Children's Zoo at the San Diego Zoo on July 10, 2008. Born on June 18, they had been staying close to mom, Amina, but are now venturing away from her more. These little creatures use their spines to protect themselves from predators in the wild. They roll themselves up in a complete ball, with even their nose tucked in, and present only the sharp spines to any animal trying to eat them. The babies are as yet unnamed, but are growing fast, now weighing a whopping 1.1 to 1.4 ounces each. (UPI Photo/Ken Bohn/San Diego Zoo) | License Photo

Red river hogs race around their enclosure at the San Diego Zoo on April 3, 2007..The piglets are one week old and are active and healthy. Red river hogs are native to western, and parts of central Africa. (UPI Photo/Ken Bohn/Zoological Society of San Diego).. | License Photo

Five South African bat eared fox kits have emerged from their birthing den at the San Diego Zoo's Wild Animal Park on June 8, 2007. The kits were born sometime in late April, but have only recently started making a public appearance outside the den. These foxes are native to African savannas and are rarely seen in zoos (UPI Photo/Ken Bohn/Zoological Society of San Diego) | License Photo

A baby western lowland gorilla sits in the grass in an undated photo taken the Republic of Congo. The Wildlife Conservation Society has tallied more than 125,000 western gorillas in two adjacent areas of the northern part of the Republic of Congo, which is the highest gorilla densities ever recorded, as high as eight individuals in an area smaller than half a square mile. (UPI Photo/Thomas Breuer) | License Photo

A koala joey, born March 24, 2008, holds onto its mother, Orana, as she climbs into her perching tree at the San Diego Zoo on December 4, 2008 The female joey weighs almost two pounds and is the first koala born at the Zoo. (UPI Photo/Ken Bohn/San Diego Zoo)

A koala joey, born March 24, 2008, holds onto its mother, Orana, as she climbs into her perching tree at the San Diego Zoo on December 4, 2008 The female joey weighs almost two pounds and is the first koala born at the Zoo. (UPI Photo/Ken Bohn/San Diego Zoo)

Bornean orangutan Sophia, 27, (L) a highly-endangered species in the wild, sits with her newborn infant female at the Brookfield Zoo on October 23, 2008 in Brookfield, Illinois. The birth of the female on October 6 is only the second birth of an orangutan, a highly-endangered species, expected in an accredited North American zoo this year. The infant orangutan made her public debut Wednesday. (UPI Photo/Brian Kersey) | License Photo

A couple of mule deer steer clear of a black rhino calf as he runs around his habitat at the San Diego Zoo on August 21, 2008. This calf, which has yet to be named, was born at the San Diego Zoo's Wild Animal Park on July 17, 2008. He weighs about 150 pounds and can be expected to reach a weight of 2500 pounds. Despite their size and weight, black rhinos are known to run at speeds up to 40 miles per hour. (UPI Photo/Tammy Spratt/San Diego Zoo) | License Photo

Clouded Leopard cubs are seen on May 29, 2009 at the Smithsonian's National Zoo in Washington. UPI/Mehgan Murphy/National Zoo | License Photo

A female western lowland gorilla carries her baby in an undated photo taken the Republic of Congo. The Wildlife Conservation Society has tallied more than 125,000 western gorillas in two adjacent areas of the northern part of the Republic of Congo, which is the highest gorilla densities ever recorded, as high as eight individuals in an area smaller than half a square mile. (UPI Photo/Thomas Breuer/Wildlife Conservation Society) | License Photo

After living in its mother's pouch for more than three months, an endangered brush-tailed bettong joey at Lincoln Park Zoo in Chicago finally emerged on June 5, 2008 . This tiny marsupial which only weighs 2 or 3 pounds when fully grown is native to Southwestern Australia. This rare species was nearly extinct in the wild by the early 1900s due to predation by introduced animals like cats, rats and foxes. Fortunately, managed breeding programs and recovery efforts are underway to ensure species survival. (UPI Photo/Greg Neise/Lincoln Park Zoo) | License Photo

A female trumpeter swan nuzzles her newly hatched cygnet that just emerged from the shell at Lincoln Park Zoo in Chicago on May 29, 2008. This cygnet is slated to be released to the wild this fall as part of swan re-introduction and recovery program. Trumpeter swans were hunted to near extinction in 1900 and now, thanks to managed breeding and recovery efforts, these swans are thriving again in many parts of the Midwest. (UPI Photo/Greg Neise/Lincoln Park Zoo) | License Photo

Four-month-old Nyack (R) greets his cousin Ingozi at the San Diego Zoo's Wild Animal Park in San Diego on April 18, 2008. The male lion is now living at Lion Camp after spending the first few months of his life at the Wild Animal Park's nursery where he was hand raised. The male cub was born Dec. 6 following a difficult delivery. While his mother initially tended to the cub, her maternal care began to wane, compromising his health. The cub has since recovered fully and is being introduced to other cubs at Lion Camp. Although his new companions are being raised by their mothers, the cubs spend the mornings away from their parents to help socialize Nyack. (UPI Photo/Ken Bohn/San Diego Zoo) | License Photo

Atlantic bottlenose dolphin, calf Mavrick, swims with his mother, 28-year-old Chelsea, during his first viewing by the media at the Dolphin Discovery area in Six Flags Discovery Kingdom, Vallejo, California, on January 24, 2008. Mavrick was born on November 5, 2007. (UPI Photo/Ken James) | License Photo

A newborn Kulan, a rare type of wild ass from Afghanistan, walks in a meadow, at Mountainview Conservatory near Vancouver, British Columbia, May 22, 2007. The endangered Kulans are nearly extinct in their native Afghanistan. (UPI Photo/Tim King) | License Photo

A healthy newborn Addax calf gets up, April 5, 2007, after being born at the Mountainveiw Conservatory near Vancouver, British Columbia on April 1, 2007. The calf, an endangered specie, will be re-introduced to the wild of Senegal in November of this year. (UPI Photo / Tim King) | License Photo

A one-month-old king penguin chick named Tut peeks out from behind the protection of his mother, Iris, in the Penguin and Puffin Coast at the St. Louis Zoo on January 31, 2007. (UPI Photo/Bill Greenblatt)

A one-month-old king penguin chick named Tut peeks out from behind the protection of his mother, Iris, in the Penguin and Puffin Coast at the St. Louis Zoo on January 31, 2007. (UPI Photo/Bill Greenblatt)

Little LaRoo, the first Matschie's tree kangaroo born at the St. Louis Zoo, peeks out of mother Kasbeth's pouch during feeding time in St. Louis on December 20, 2006. The joey, as young kangaroos are called, was born six months ago and just started emerging from its mother's pouch. Matschie's tree kangaroos are smaller than their Australian relatives, but can jump 30 feet. (UPI Photo/Bill Greenblatt) | License Photo

The St. Louis Zoo has released this photograph of a new Asian elephant baby born on August 2, 2006 in St. Louis. Ellie, the Zoo's 34-year-old Asian elephant, gave birth to this 341-pound baby girl. This is Ellie's second baby and the first for the baby's father, Raja. Raja was the first elephant ever born at the St. Louis Zoo. Now, at age 13-1/2, he's started a new family, with another baby on the way in February. (UPI Photo/St. Louis Zoo) | License Photo

A baby pygmy slow loris is on display at the San Diego Zoo's nursery in San Diego, Calif. on July 27, 2006. The male was born June 24, and is now on display in a larger enclosure as it becomes more active. When the baby was born, it weighed 17 grams, and was one of the smallest babies the nursery has cared for. It now weighs 60 grams. He was taken to the nursery after his mother was not giving him proper care. (UPI Photo/Ken Bohn) | License Photo

Nine Caribbean flamingo chicks are on display at the San Diego Zoo, June 27, 2006. The chicks having hatched recently may soon have company. With several more eggs on the conical nests, zookeepers are hoping more of the downy gray chicks will soon join the flock. The earliest hatching was May 28 and the latest on June 23. Both male and female flamingos sit on the nests and raise and feed the young birds. (UPI Photo/Ken Bohn/San Diego Zoo).. | License Photo

A ring-tailed lemur baby named Ã’RandiÃ“ born on March 12 gets a ride on the back of his mother at the St. Louis Zoo on April 20, 2006. Weighing about two ounces, these primitive primates have a foxlike face and a long striped tail. .Lemurs are a group of primates that can be found only in Madagascar, the fourth largest island in the world.The St. Louis Zoo is home to the international headquarters of the Madagascar Fauna Group, a consortium of zoos and aquariums committed to conserving lemurs and other wildlife species within their native habitats. (UPI Photo/Bill Greenblatt) | License Photo

Heidi, A female Bactrian camel, born on March 21 weighing 61 pounds, sits next to her mother at the St. Louis Zoo in St. Louis on April 20, 2006. The critically endangered species is native to Mongolia in central Asia. Baby camels are born with two humps, like their parents, but at birth these lay flat against their sides until they can store up energy-rich fat. (UPI Photo/Bill Greenblatt) | License Photo

A six-week-old Visayan warty pig plays king of the mountain atop of an adult pig at the San Diego Zoo on February 6, 2006. The piglet, along with two others, was born in the seasonâ€™s first litter. The Visayan warty pig is critically endangered and is found only on two islands in the Philippines. The San Diego Zoo has been successful at reproducing this species and is working with other zoos to increase the population of warty pigs. (UPI Photo/Ken Bohn/San Diego Zoo) | License Photo

Su Lin, the San Diego Zoo's 16-week-old giant panda cub, showed off two of her new canine teeth during her weekly veterinary exam November 23, 2005 in San Diego. According to San Diego Zoo veterinarians the cub now has 14 to 16 teeth. Su Lin weighs 11.3 pounds and measured more than 2 feet. (UPI Photo/Ken Bohn) | License Photo

A healthy female Grevy Zebra named Zofia, approximately four hours old stands with her mother, October 30, 2005. at Mountainview Conservation Society near Vancouver, British Columbia. (UPI Photo/Tim King) | License Photo

A one-month old California sea lion pup yawns while sunning himself on a rocky ledge at the sea lion pool at the Bronx Zoo on August 11,2005 in New York City. The pup, who is thus far unnamed, is among several babies being introduced at the zoo. (UPI Photo/Monika Graff) | License Photo

Layla, left, the 3 1/2 month-old snow leopard cub, chews on a twig at the Bronx Zoo on August 11,2005 in New York City. The snow leopards are endagered species who dwell in the Himalayan highlands. (UPI Photo/Monika Graff) | License Photo

The San Diego Zoo's Wild Animal Park celebrates the hatching of the first California condor of the season. The chick, which hatched Sunday, April 3, will be puppet-reared to eliminate any association between people and food. Keepers will feed and monitor the chick daily at the Wild Animal Park's condor breeding facility. At four months old the Park's animal care staff is expected to introduce the chick and future hatchlings into a new classroom facility where two mentor birds will teach the chicks how to act like condors. There are more than 100 condors living in the wild in California, Arizona and Baja, Mexico since the California Condor Recovery Program began to release condors back into the wild in 1992. A second chick hatched Wednesday at the Park. (UPI Photo/Ken Bohn.. | License Photo

An endangered Indian rhinoceros calf born at the San Diego Zoo's Wild Animal Park napped with his favorite toy, a large plush elephant On February 10, 2005 in San Diego. The calf was born on exhibit at the Wild Animal Park Jan. 7, but the calf's mother (dam) died several days later of complications from giving birth. The male calf is being hand reared by the nursery staff with a technique reserved only for animals whose mothers are unable to care for them. Animal keepers at the Park have successfully hand-reared other species of rhinoceros. The Wild Animal Park is the foremost breeding facility in the world for the Indian rhinoceros with 46 rhinos born at the facility since 1978. Also, the Park is the first facility in the Western Hemisphere to have a successfully reproduced group of third and fourth generation Indian rhinos. (UPI Photo/Ken Bohn)... | License Photo

Four cheetah cubs nestle with their mom Tumai at the National Zoo in Washington on February 4, 2005. This is the first litter of cheetah cubs born at the National Zoo during its 115-year history. They were born 10 weeks ago. Cheetahs are the fastest land animals, reaching speeds upwards of 60 miles per hour. (UPI Photo/Pat Benic) | License Photo

Badru, a four month-old Okapi explores his living area while seperated from his parents at the St. Louis Zoo on November 12, 2004. Badru is the first Okapi born at the St. Louis Zoo and was raised by his keepers after the mother was frightened during delivery, breaking the baby's leg. (UPI Photo/Bill Greenblatt) | License Photo

Sumatran orangutan infant, Cinta, and his mother Indah command attention at the San Diego Zoo.on November 9, 2004. Nov. 7th - 13th is International Orangutan Awareness Week at the Zoo, and the goal is to raise public awareness about the plight of orangutans in the wild -- a critically endangered species which may become extinct in 7 - 10 years due to rampant logging of their habitat. (UPI Photo/ Ken Bohn/Zoological Society of San Diego) | License Photo

A 9-week-old fossa watches curiously as visitors to the San Diego Zoo on September 9, 2004, check out the fossa family that has made its public debut only this week. This is the first time in 10 years that this species from the civet family has been born at the Zoo. The dam (mother) and her three pups explored their surroundings and have immediately become expert tree and rock climbers, with only a few minor tumbles. Fossas are only found on Madagascar where they are the island's largest carnivore. They are now considered an endangered species. (UPI Photo/Ken Bohn-San Diego Zoo).. . | License Photo

Bornean sun bear cub, Duma, calls to his mom while exploring his Sun Bear Forest exhibit at the San Diego Zoo on June 28, 2004 . This is the first time the four-month old cub, born Feb. 17, has left his den to explore the outdoor exhibit. Bornean sun bears are rarely seen in Zoos, and Duma is the first ever to be born at the San Diego Zoo. Bornean sun bears are some of the smallest bears in the world, and are threatened with extinction in the wild. (UPI Photo/Ken Bohn/San Diego Zoo) | License Photo

A curious 7-week-old dhole peered into the distance as its sibling bounded away. The two puppies were born in a litter of three to a pair of Asian wild dogs called dholes at the San Diego Zoo's Wild Animal Park. The shy dholes are part of a breeding program that keeps them off exhibit at the Wild Animal Park. (UPI Photo/Ken Bohn/Zoological Society of San Diego) | License Photo