阅读资料：为什么猫会打呼噜？No one knows for sure why a domestic cat purrs, but many people interpret the sound as one of contentment. 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. 没有人确切知道为何家猫会发出呼噜声，但很多人都把这种声音理解成是一种心满意足的表现。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。 Kittens learn how to purr when they are a couple of days old. Vets suggest that this purring tells "Mom" that "I am okay" and that "I am here". It also indicates a bonding mechanism between kitten and mother. 幼猫在几天大的时候就学会发出呼噜声了。兽医们认为这是在告诉猫妈妈“我挺好的”和“我在这儿呢”之类的信息。发呼噜声也说明幼猫和猫妈妈之间存在着一种亲密的心理感应关系。 As the kitten grows into adulthood, purring continues. Many suggest a cat purrs from contentment and pleasure. But a cat also purrs when it is injured and in pain. Dr. Elizabeth Von Muggenthaler, a famous bioacoustician, has suggested that the purr, with its low frequency vibrations, is a "natural healing mechanism". Purring may be linked to the strengthening and repairing of bones, relief of pain, and wound healing. 幼猫成长为成年猫的过程中，会继续发出呼噜声。很多人都认为猫是因为满足和愉快才发出这种声音的。但是，猫受了伤或处于疼痛中时，也会发出呼噜声。著名的生物生学家伊丽莎白•冯•穆根塔勒提出，呼噜声连同其低频振动是一种“天然的治疗机制”。发出呼噜声或许与骨骼的加固与矫正，减轻疼痛以及愈合伤口有着某种联系。 Purring is a unique vocal feature in the domestic cat. However, other species in the Felidae family also purr: bobcat, cheetah, Eurasian lynx, puma, and wild cat. Although some big cats like lions exhibit a ...
