An external structure that matches the color and pattern of the animal's surroundings would best help it to camouflage. This could be a coat of fur, feathers or scales that match the color of nearby grass, leaves, or rocks. For example, a chameleon's ability to change its skin color enables it to blend in with its environment and avoid being noticed by predators.
Which internal system is responsible for transporting oxygen and nutrients through an animal's body?
