Question: do tortoises hear sound

Siti Syuhaida Mohamed Yunus answered on 20 Oct 2020:

Numerous publications have tried to give the impression that tortoises are virtually deaf. However, it is fair to say that their hearing is significantly different from ours and perhaps less sensitive to high-frequency sounds, they are no means deaf.

The ears themselves have no external auricle and can be best described as simple ear “flaps” or “scales” which are located behind the tortoise’s eyes towards the rear of the head.