A dog used to move and control sheep, often very highly trained. Other types of dog may be used just to guard sheep (see livestock guarding dog), and these are sometimes also called sheepdogs.

用于赶羊和控制羊的狗，往往非常训练有素。其他类型的狗可能只用于守护羊（见牲畜护卫犬），这些有时也被称为牧羊犬。