why dont geckos sink in the sand

Why don’t geckos sink into the sand Disappearing into the promised land? What saves their Arizona lives? What keeps them up? The flaps in between their toes said my Uncle Hup. I thought he was joking, because he is a funny guy So, I looked it up in my gecko book which was way up high He was exactly right, my uncle, with his goofy laugh Now I am researching the gopher and the giraffe