Replies:
Depends on what we want to measure... frequencies, decibels??.
Nevertheless, my guess for land dwellers is the owl reputed to be able to
hear a mouse squeak from a few hundred yards...for sea dwellers with the
unfair advantage of hearing vibrations through another medium (water) my
guess would be that it would be difficult to exceed the whale which hears
other whale song from hundreds perhaps thousands of miles off. Then of
course I can't forget my fifth grade math teacher who could hear me think
...certain ugly thoughts...(-;
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