So snakes have heat pits with which to detect infrared, and the ghost knifefish has electroreceptors, and the star-nosed mole has this appendage with 22 fingers on it with which it feels around and constructs a 3D model of the world, and many birds have magnetite so they can orient to the magnetic field of the planet.
Madudel on pea küljel lohud, kus paiknevad infrapunaretseptorid, mustal nugakalal on elektroretseptorid ja tähtmutil on nina otsas huvitav 22 näsaga lisaorgan millega ta ümbritsevat maailma kompab ja sellest kolmemõõtmelise pildi loob. Paljude lindude organismis on magnetiiti, et orienteeruda maa magnetväljade abil.