Chromatophores are specialized cells found in certain animals, such as cephalopods (like squids and octopuses) and reptiles. These cells contain pigments that can change color, allowing the animal to blend into its environment or communicate with others. The ability to change color is controlled by the nervous system and can happen rapidly. In addition to cephalopods and reptiles, chromatophores are also present in some fish and amphibians. They play a crucial role in camouflage, signaling, and temperature regulation. The study of chromatophores helps scientists understand animal behavior and adaptation in various ecosystems.