@herptime: I love anoles and so should you! There's so many reasons why this group of lizards is so fascinating, but the dewlap is an obvious and defining feature of the genus Anolis. All except 2 species of anoles have a "dewlap" (did you spot the one in the video without one?). A dewlap is just a flap of skin on their throat that can be extended, which they use for territorial displays, mating rituals, and other forms of communication. Dewlaps come in all shapes, sizes, and colors. Manually extending dewlaps does not hurt the anoles or cause any sort of discomfort; it's no different than lifting your arm if it was relaxed. It may be a bit annoying to them, but for a few second clip to share their beauty with the internet, I think they'll understand!