Animal moms and their babies

Four newly hatched cygnets follow their mother swan into the lake at Crossgates Country Club near Millersville, Pa. Monday, April 30, 2012. (AP Photo/Lancaster Newspapers, Richard Hertzler)

epa03197857 A baby one-day-old American Bison and his mother are pictured in the zoo de Servion, in Servion, Switzerland, 27 April 2012. EPA/LAURENT GILLIERON

epa03197951 Baby elephant 'Assam' explores his enclosure with his mother at the Hagenbeck zoo in Hamburg, Germany, 27 April 2012. It was the first time the little elephant was allowed to play in the open-air enclosure. EPA/DANIEL BOCKWOLDT Elefantenbaby erobert Freigehege

epa03195886 Gorilla Chelewa holds her gorilla baby born last night at Cabarceno Park in Cantabria, northern Spain, 25 April 2012. The newborn weights 2.2 kilos and is the first one of its species born in this park. EPA/ESTEBAN COBO

An infant mongoose lemur is shown nestled in the fur of its mother in this handout photo released by Busch Gardens in Tampa April 25, 2012. Earlier this month mongoose lemur twins were born to the popular Florida attraction. The animal is classified as a \"vulnerable\" species. Busch Gardens takes part in breeding programs for for threatened or endangered species, according to officials. REUTERS/Matt Marriott/Busch Gardens/Handout (UNITED STATES - Tags: ANIMALS) NO SALES. NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS

A white stork brings a branch in its nest near Biebesheim, western Germany, on April 25, 2012. White storks begin their mating season each spring when males return to breeding grounds, in March or April. AFP PHOTO/ TOPSHOTS/ BORIS ROESSLER *** GERMANY OUT *** (Photo credit should read BORIS ROESSLER/AFP/Getty Images)

epa03180114 10-years-old Sumatra Orang-Utan female Cahaya cuddles her six days old male cub Malou at the zoo in Zurich, Switzerland, 12 April 2012. Cahaya gave birth to her first offspring on Good Friday. EPA/ALESSANDRO DELLA BELLA

epa03184891 A newborn South American female tapir baby lies next to her mother at the Debrecen Zoo, in Debrecen, 226 kms east of Budapest, Hungary, 16 April 2012. The cub was born in the night of 15 April, weighting 6,000 grams. Her parents came to the zoo in March 2011 within the framework of a species conservation program. EPA/ZSOLT CZEGLEDI HUNGARY OUT

A one-month old albino Bennett tree-kangaroo (Dendrolagus bennettianus) rest in his mother's pouch in the 'Garden of Nature' zoo in the town of Szeged, on April 21, 2012. New \"World Heritage\" legislation aims to protect the population of Bennett kangaroos, a type of large tree-kangaroo. AFP PHOTO / CSABA SEGESVARI (Photo credit should read CSABA SEGESVARI/AFP/Getty Images)

Two storks care for their chicks sitting in their nest on April 23, 2012 at the wildlife park in Eekholt, northwestern Germany. Since April 20, 2012, four baby storks hatched from their eggs. AFP PHOTO / CARSTEN REHDER GERMANY OUT (Photo credit should read CARSTEN REHDER/AFP/Getty Images)

A golden taken takes care of her one-day-old offspring in Liberec zoo April 13, 2012. The Liberec zoo is the only one in Europe which breeds the species, a goat-antelope from Asia, in captivity, according to a spokesperson from the zoo. REUTERS/Petr Josek (CZECH REPUBLIC - Tags: ANIMALS SOCIETY)

HAMBURG, GERMANY - APRIL 18: An unnamed baby baboon is seen in his mothers arms at the Hagenbeck Zoo on April 18, 2012 in Hamburg, Germany. (Photo by Joern Pollex/Getty Images)

One-day-old female Asian elephant baby (Elephas maximus) keeps close to her mother Lai Sinh in their enclosure in the Hagenbeck Zoo in Hamburg, Friday April 13, 2012.The baby has no name yet. (AP Photo/dapd/ Philipp Guelland)

epa03180646 'Kiazi' (R), meaning sweet potato, a rare Eastern Bongo stands beside his first-time mum Djembe on 02 April at Taronga Zoo in Sydney, Australia, 13 April 2012. Eastern Bongo's are critically endangered with as few as 75 remaining in their Kenyan upland range. EPA/DEAN LEWINS AUSTRALIA AND NEW ZEALAND OUT

An American bald eagle feeds its young in their nest at Gray's Lake Park, in Des Moines, Iowa, Monday, April 9, 2012. (AP Photo/Charlie Neibergall)

Mother Orsa (L) and her three young bears discover the open-air enclosure at the wildlife park Tripsdrill, on 10 April 2012, near Cleebronn, southern Germany . AFP PHOTO / FRANZISKA KRAUFMANN GERMANY OUT (Photo credit should read FRANZISKA KRAUFMANN/AFP/Getty Images)

Polar bear mother Vilma (L), cuddles with his cub Anori at the open-air enclosure at the zoo in Wuppertal, western Germany, on March 29, 2012. Anori was born on January 4, 2012. Anori has the same father as polar bear Knut, who died 2011. AFP PHOTO / MARIUS BECKER GERMANY OUT (Photo credit should read MARIUS BECKER/AFP/Getty Images)

Orangutan infant Aurora, 1, rests on top of her surrogate mother Cheyenne's head after eating breakfast at the Houston Zoo Thursday, March 29, 2012, in Houston. Born at the zoo in March 2011, Aurora was abandoned by her mother and hand raised by volunteers for nine months before being adopted by Cheyenne. (AP Photo/Pat Sullivan)

A mother polar bear plays with two of her three cubs born in last November, at the Moscow Zoo, on March 22, 2012. AFP PHOTO / ANDREY SMIRNOV (Photo credit should read ANDREY SMIRNOV/AFP/Getty Images)

A female Baringo giraffe calf born this month at the Wildlife Conservation Society's Bronx Zoo stays close to her mother in the Carter Giraffe Building at the Bronx Zoo, in New York in this handout photo received by Reuters March 22, 2012. The calf will be making its debut in the zoo's African Plains in about one week. The calf was approximately 6 feet tall and over 100 pounds at birth. As an adult, she could eventually grow to 16 feet and weigh 2,600 pounds. REUTERS/Wildlife Conservation Society/Julie Larsen Maher/Handout (UNITED STATES - Tags: ANIMALS) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS

Wira, a newborn male baby Sulawesi crested macaques is held by his mother Wino at ZSL London Zoo in London March 14, 2012. Born with bright blue eyes and pale skin, Wira's features will get darker with age, his eyes will turn brown and he'll also develop the macaque's iconic crest of hair on his head. REUTERS/ZSL London/handout (BRITAIN) - Tags: ANIMALS) NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS

epa03116659 Two Asiatic lion cubs, that were born in November, venture outdoors for the first time accompanied by their mother at Blijdorp Zoo in Rotterdam, The Netherlands, 22 February 2012. EPA/ROBERT VOS

epa03138634 Two-year-old Henry rides the back of his mother Kuchi inside a Western lowland gorilla habitat at Zoo Atlanta in Atlanta, Georgia USA on 09 March 2012. CNN founder and media mogul Ted Turner announced his donation of $1 million to the Zoo Atlanta-based Dian Fossey Gorilla Fund International, toward helping save endangered gorillas in eastern Congo. EPA/ERIK S. LESSER

epa03099622 A three-day-old Lechwe antilope stands next to its mother at the zoo in Berlin, Germany, 10 February 2012. Three young antilopes were born at the zoo at the same time. They all have different mother but the same father. EPA/STEPHANIE PILICK

TOPSHOTS - A baby baboon only a few days old, stands next to its mother in an enclosure at the \"ZOOM\" Zoo in Gelsenkirchen, western Germany on March 12, 2012. TOPSHOTS / AFP PHOTO / PATRIK STOLLARZ (Photo credit should read PATRIK STOLLARZ/AFP/Getty Images)

Maggie, a baby reticulated giraffe, is nuzzled by an adult giraffe at the Oakland Zoo Thursday, Feb. 2, 2012, in Oakland, Calif. Weighing in at eighty pounds and seventy-two inches, Maggie is the first female giraffe born at the Zoo in nearly a decade. (AP Photo/Ben Margot)

epa03083319 Rhino offspring Mala lies next to its mother Mana in their compound at the zoo in Magdeburg, Germany, 28 January 2012. The rhino born on 24 December 2011 was baptized on 28 January 2012. EPA/PETER ENDIG

In this photo taken Nov. 18, 2011, provided by the Lincoln Park Zoo, Western Lowland Gorilla mother Bana hold her new her baby which was born on Nov. 16, 2011. The baby which has yet to be named joins a troop of seven Western Lowland Gorillas at the zoo. The newborn girl is the first of this critically endangered species to be born at the zoo since 2005. (AP Photo/ Lincoln Park Zoo, Todd Rosenberg)

Four baby capybaras are accompanied by their mother as they explore their enclosure on November 3, 2011 at the zoo in Schwerin, northeastern Germany. The animals were born at the zoo on November 1, 2011. Capybaras, relative to guinea pigs, are the largest living rodents in the world and are native to South America. AFP PHOTO JENS BUETTNER GERMANY OUT (Photo credit should read JENS BUTTNER/AFP/Getty Images)

SYDNEY, AUSTRALIA - OCTOBER 25: Sumatran tiger Jumilah is seen with her cubs on display at Taronga Zoo on October 25, 2011 in Sydney, Australia. The Sumatran tiger cubs, born in August to mother Jumilah, will meet the public for the first time this week. (Photo by Mark Kolbe/Getty Images)

A chimpanzee cuddles her infant in their newly renovated habitat at Taronga Zoo in Sydney on September 30, 2011. The state-of-the-art exhibit features giant towers, networks of climbing ropes, a giant hammock, as well as an expansive glassed area and tunnel systems for viewing the primates. TOPSHOTS AFP PHOTO / Torsten BLACKWOOD (Photo credit should read TORSTEN BLACKWOOD/AFP/Getty Images)