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.
As cobras têm fendas de calor que permitem detectar o infravermelho, o fantasma negro tem receptores elétricos e a toupeira-nariz-de-estrela tem um apêndice, com 22 tentáculos, que permite sentir o ambiente e construir um modelo 3D do mundo; vários pássaros têm magnetita, e assim eles podem se orientar pelo campo magnético do planeta.