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.
Las serpientes tienen hoyos de calor para detectar infrarrojos, y el pez cuchillo tiene electrorreceptores, y el topo de nariz estrellada tiene este apéndice con 22 dedos con los que percibe y construye un modelo 3D del mundo, y muchas aves tienen magnetita para orientarse hacia campo magnético del planeta.