Why do frogs or geckos have suction cups?
Geckos have ‘suction cups’ so they can climb up walls, trees, rocks, and anything else they can climb. Geckos can even climb up sheer, polished glass at a 90 degree angle! Although the Geckos’ feet have toepads, that are not actually like suction cups that you might think. The Gecko can climb due to hundreds of thousands of incredibly fine, microscopic hairs that line their foot pads. Each hair has two suction cups at the end of it, each cup about 20,320,000 cm in diameter (8 millionths of an inch). Due to advances in modern science, scientists have even developed a material similar to a geckos’ hairs. This material (although under much progress) may some day allow people to climb up walls as well.
