National Zoo Cheetah (IMAGE)

Smithsonian

National Zoo Cheetah

Caption

Scientists at the Smithsonian Conservation Biology Institute have determined that while the hormones and eggs of cheetahs older than 8 years appear normal, the animals’ uterine tracks tend to suffer from abnormal cell growth, infections and cysts that prevent pregnancy.

Credit

Photo by Mehgan Murphy, Smithsonian’s National Zoo

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