Thomas Marent / Boulenger's Green Anole (Anolis chloris) male displaying, Tatama National Park, Colombia

Pete Oxford / Green Iguana (Iguana iguana) male showing large dewlap, Banco Chinchorro, Yucatan Peninsula, Mexico

Pete Oxford / Green Iguana (Iguana iguana) male showing large dewlap, Banco Chinchorro, Yucatan Peninsula, Mexico

Michael D. Kern / Common iguana (Iguana iguana) albino, captive, from Central and South America

Thomas Marent / Banded Anole (Anolis insignis) displaying dewlap in cloud forest, Costa Rica

Thomas Marent / Boulenger's Green Anole (Anolis chloris) male displaying, Tatama National Park, Colombia

Thomas Marent / Boulenger's Green Anole (Anolis chloris) male displaying, Tatama National Park, Colombia

Yashpal Rathore / Superb fan-throated lizard (Sarada superba) male displaying dewlap, Chalkewadi Plateau, Maharashtra, India,. Sequence 2/2

Yashpal Rathore / Superb Fan-throated Lizard (Sarada superba), male walking on its hind legs displaying dewlap. Chalkewadi Plateau, Maharashtra, India. Sequence 1/2

Yashpal Rathore / Superb fan-throated lizard (Sarada superba) male displaying dewlap, Chalkewadi Plateau, Maharashtra, India

Yashpal Rathore / Superb fan-throated lizard (Sarada superba) male displaying dewlap, Chalkewadi Plateau, Maharashtra, India

Yashpal Rathore / Superb fan-throated lizard (Sarada superba) male displaying dewlap, Chalkewadi Plateau, Maharashtra, India