Shark
Sharks have the ability to determine the direction of a given scent based on the timing of scent detection in each nostril.<ref>Jayne M. Gardiner, Jelle Atema 2010. The function of bilateral odor arrival time differences in olfactory orientation of sharks. Current Biology 20 (13),<rc-c2d-number> 1187-1191 </rc-c2d-number> </ref> This is similar to the method mammals use to determine direction of sound.