What goes up must come down: Geckos alter foot orientation during downhill locomotion

Geckos employ an adhesive system that facilitates their climbing vertically, and even in inverted positions. But can geckos employ this system when moving downhill? Biologists have conducted lab experiments on geckos to find that when moving on steep downhill surfaces geckos reverse the position of their hind feet to potentially use the adhesive system as a brake and/or stabilizer, resulting in the digits of the hind feet facing backwards. Leer más.