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INTRODUCTION

The intricate physiology of hearing varies widely across the animal kingdom, prompting a nuanced exploration of auditory capabilities. Among humans, birds, and select mammals, the ability to hear is well-documented, enabling them to articulate sensations and respond to trained sounds.

However, the perception of sound in other vertebrates and invertebrates remains a subject of debate. The presence of a histologic apparatus similar to that of humans suggests potential auditory experiences in some species, while others may interpret sound as tactile or vibratory stimuli. Recent studies challenging assumptions about fish hearing, par­ticularly by von Frisch, underscore the complexity of audi­tory phenomena. Furthermore, the presence of a cochlea in amphibians adds to the ambiguity, as some reptiles with auditory structures display limited sound responsiveness. In contrast, birds and mammals, exemplified by dogs and cats, demonstrate not only auditory sensitivity but also the ability to distinguish subtle variations in tone. As this comparative examination unfolds, the intricate relationship between anatomy, behavior, and sound perception becomes increasingly apparent, urging a deeper understanding of the diverse auditory systems across the animal kingdom.

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Source: Rana Tanmoy (ed.). Principles of Veterinary Animal Physiology. CRC Press,2026. — 290 p.. 2026

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