PERFORMANCE ADAPTABILITY

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About Us

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All Terrain Bull Sale

March 23, 2026 – Walsh, CO

GENETICS YOU CAN COUNT ON.

Welcome.

A journey that began in 1969 when Erroll and Gayle Cook used their first Simmental bulls has evolved into a family seedstock business that markets bulls and females in many states.

Located in the short grass country of extreme southeast Colorado, Erroll Cook, along with his three sons, Chad, Brent, and Brad market approximately 100 yearling Simmental and SimAngus black and red bulls in their annual All Terrain Bull Sale held in March.

Bridle Bit Simmentals is proud to work hand in hand with the American Simmental Association collecting data on every animal born for generations of cow families. Receiving a perfect score on the ASA Performance Advocate Program in 2014 is quite an honor.

We work really hard every day in our operation to ensure that our customers can get the maximum from their genetics. We lean on industry experts and association programs to stay on the cutting edge of the beef business.