Bison once roamed the West, but settlers hunted them to the brink of extinction in the 19th century. A captive breeding program operated in Golden Gate Park helped the species rebound. Today’s bison aren’t used for breeding anymore, but they remain one of the park’s popular attractions.

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Reported by Jessica Placzek. Bay Curious is made by Olivia Allen-Price, Katrina Schwartz, Sebastian Miño-Bucheli and Brendan Willard. Thanks also to Sarah Rose Leonard, Lance Gardner, Kyana Moghadam, Amanda Font and Rebecca Kao for their help on this series.