There is nothing more adorable than a litter of newborn baby animals, but these cubs are special for another reason beyond their cuteness.
According to the Associated Press, a lioness in China has given birth to two lion-tiger crossbreeds and one purebred lion in the same litter, marking a world first.
This video clip shot in Changzhou, China, includes footage of the cubs playing and eating, along with shots of the mother lionness walking alongside a male tiger, presumed to be the father.
PBS explains how the so-called "tigons" and "ligers" are produced through interspecies breeding:
Although they rarely meet in the wild, lions and tigers are still so closely related that they are able to interbreed, and in captivity they occasionally do. But successful interbreeding is the key, and the hybrid offspring are usually sterile and short-lived.
While the population of African lions is said to be shrinking, Asian lions are even more rare, qualifying as an endangered species. Meanwhile, all sub-species of tigers are considered critically endangered.
Can't get enough cute baby lions? Check out this video of a pair of new born cubs trying to propel themselves out of a massive cup at the Ukutula National Park And Lodge in South Africa.
Watch the adorable video above.
SLIDESHOW: More Cute Baby Animals:
Three cheetah cubs, born in November 2004, lean against their mother during a preview showing at the National Zoo in February 2005 in Washington D.C. Today there are just 12,400 cheetahs remaining in the wild, with the biggest population, totaling 2,500 living in Namibia.
A baby Black Rhinoceros stands in front of its mother in an enclosure at Tokyo's Ueno Zoo in June 2009. The Black Rhinoceros is a critically endangered species, according to the International Rhino Foundation there are less than 5,000 surviving in the world.
An orangutan infant at Ragunan Zoo in Jakarta, Indonesia, on February 15, 2007. Orangutans are threatened by deforestation and hunting. Click here for more orangutan photos.
A baby joey koala at Sydney's Wildlife World. Though koalas are Australia's most iconic and adored marsupials, they are under threat due to a shortage of suitable habitat from mass land clearance.
A 15-year-old female mountain gorilla holds her five month old son at the Kahuzi Biega Nature Park in Democratic Republic of Congo in May 2004. Only 700 mountain gorillas are left in the world, and over half live in central Africa.
A group of African penguins gather near a pond at a conservation site in Cape Town, South Africa. Birdlife International say the African penguin is edging closer to extinction.
A Trio of 45 day-old Bengal white tiger cubs were born in December 2007 At the Buenos Aires Zoo. With only 240 white tigers living in the world, their birth gave a boost to the animals' endangered population.
A pair of black bears sit at a zoo in Kwachon, South Korea in November 2001. Black bears have been on the endangered species list since 2007.
A newly born Madagascar Lemur, an endangered species, at Besancon Zoo in France. There are only 17 living in captivity worldwide.
Two-month-old twin Red Panda cubs make their debut at Taronga Zoo in March 2007 in Sydney, Australia. The cubs were born out of an international breeding program for endangered species.
China's panda is one of the world's most beloved but endangered animals. Lin Hui, a female Panda- on a ten-year loan from China - eats bamboo at Chiang Mai Zoo in Thailand in Sept 2005. Captive pandas are notoriously poor breeders.
The Sydney's Taronga Zoo is home for this bright orange male infant monkey. This South East Asian monkey is highly endangered.
A grey-bellied Night Monkey born in captivity climbs onto his mother's arms at the Santa Fe Zoo, in Medellin, Colombia. The Night Monkey is an endangered species.
A six-month-old male Sumatran tiger cub rests under his mother careful watch at the National Zoo in Washington in October 2004. Sumatran tigers are endangered; fewer than 500 are believed to exist in the wild and 210 animals live in zoos around the world.
A baby elephant is pictured at the Singapore Zoo on Friday, Dec. 10, 2010. Many elephants are threatened by habitat loss and listed as endangered on the IUCN Red List.
A sow polar bear rests with her cubs on the pack ice in the Beaufort Sea in Alaska. In 2008, the U.S. government described polar bears as threatened under the Endangered Species Act. Due to dangerous declines in ice habit, polar bears are at risk of becoming endangered.