Two Przewalski's horses have been born at the National Zoo's Center for Research and Conservation in Front Royal, Virginia. A filly was born on June 27, and a colt was born on July 1. Both foals were sired by a nine-year-old stallion named Frog, the most genetically valuable Przewalski’s horse in the North American breeding program. The mothers of the filly and the colt came from Europe to breed with Frog in order to boost the breeding program.
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Veterinarians at the National Zoo have performed the first successful reverse vasectomy on a Przewalski's horse named Minnesota. Previously vasectomized at another zoo so he could be on exhibit with female horses, the Przewalski's horse Species Survival Plan has determined that Minnesota's genes are extermely valuable.
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