Our understanding of why a domestic cat purrs is becoming more complete; most scientists agree that the larynx (voice box), laryngeal muscles, and a neural oscillator are involved.

• 我们人类对于家猫为何发呼噜声的认识正日趋完善；大多数科学家都赞成该现象与喉、喉部肌肉和神经元振荡器有关。