Miniature Herefords do extremely well in just about any environment. So long as the pasture has a decent fence, and ample feed inside, the cattle should stay where they belong. The quality necessary for the fence depends on your location and terrain. If your pasture is alongside a busy interstate highway, you probably want to have a really high quality fence between your grass-eating investment and the oncoming traffic. In general, Miniature Herefords will respect a fence that just about any other breed of cattle would march right through.