Describe the difference in the ranges of hearing of different animals?

Rabbits will be able to hear sounds from 360Hz to 42,000Hz meaning that humans can hear lower sounds than them but they can hear much higher.

This also means that they can only hear harmonics when you are speaking. The voiced speech of a typical human adult male will have a fundamental frequency from 85 to 180 Hz, and that of a typical human adult female from 165 to 255 Hz.