Leaf-tailed gecko eyes by day and by night: Here is the giant, or common, leaf-tailed gecko (𝘜𝘳𝘰𝘱𝘭𝘢𝘵𝘶𝘴 𝘧𝘪𝘮𝘣𝘳𝘪𝘢𝘵𝘶𝘴). The eyes of leaf-tailed geckos are among the coolest in the animal kingdom — not only because of their large size and striking vertical pupils, but especially due to the intricate iris patterns and colors. The eyes look rather different during the day, when the geckos sleep, and at night, when they are active. The intensity of these patterns and colors is influen