WASHINGTON (WUSA) -- Two cheetah cubs were born at the at the Smithsonian Conservation Biology Institute. One was born on Dec. 6 and the other was born on Dec. 16. They are the first cheetahs to be born at the Smithsonian's National Zoological Park facility in Front Royal, Va.
The cubs have different mothers. The first cub's mother is 5-year-old Amani. The second cub's mother is 9-year-old Zazi.
National Zoological Park officials say that cheetahs that give birth to only one cub usually cannot produce enough milk to keep the cub alive and when in the wild they'll leave the cub to die and move on to breed and produce a larger litter. SCBI scientists chose to hand-raise Amani's cub for 13 days and then place it with Zazi, "creating a litter of two that will likely help stimulate milk production from Zazi." Researchers say they have seen both cubs nursing from Zazi.
According to Adrienne Crosier, SCBI cheetah biologist, "Only a few institutions in North American have ever successfully cross-fostered cheetah cubs and this is a first for SCBI."
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Amani's cub showed abnormal cranial tremors and had to undergo some tests and magnetic resonance imaging (MRI). According to SCBI, the MRI results did not show a developmental brain disorder, and "the severity and frequency of the tremors slowly improved." SCBI staff then put the cub into the foster family, but say they will continue to monitor the cub closely.
Cheetah cubs in human care have about a 20 percent mortality rate as compared to up to 70 percent in the wild in east Africa. Thirty-three cheetah cubs have been born in North America and have survived this year. The Zoo's two facilities now care for 13 cheetahs.
Three cheetahs from SCBI were moved to the Zoo's Washington facility, where visitors can see them in an outdoor habitat. Two litters of cheetahs have been born at the Zoo's Washington facility since 2004, including one by Zazi, the cheetah now rearing the two cubs at SCBI.
Eventually, the two cubs will be transferred to other breeding facilities.
View the slideshow or watch video of the cheetah cubs. Photos are courtesy of Adrienne Crosier, Smithsonian's National Zoo.