Homing pigeons would be the easiest animal to use. Incredibly well shaped by evolution for navigation. Source: https://scroll.in/article/1010703/how-do-pigeons

Homing pigeons would be the easiest animal to use. Incredibly well shaped by evolution for navigation. Source: https://scroll.in/article/1010703/how-do-pigeons-navigate-complex-landscapes-to-find-their-way-home-our-research-tried-to-find-out https://scroll.in/article/1010703/how-do-pigeons-navigate-co...