Camouflage is the ability of an animal to blend in with its surroundings, making it difficult for predators or prey to spot them. It is a common defense mechanism used by many animals to increase their chances of survival. Among the given options, the animal that has the ability to camouflage is the Chemolea.

Chemolea:
Chemolea is a type of lizard, also known as a chameleon. Chameleons are famous for their remarkable ability to change the color of their skin to match their environment. They have specialized cells called chromatophores that contain pigments and can expand or contract to modify the coloration of the skin. This ability allows the chameleon to blend seamlessly with its surroundings, making it almost invisible to predators or prey. It can change its color to match the color of leaves, bark, or other objects in its environment. This camouflage helps the chameleon to ambush prey or avoid being detected by predators.

Lion:
Lions, on the other hand, do not possess the ability to camouflage. They have a distinctive appearance with their tawny fur, which helps them blend in with the grasslands and savannahs where they typically live. However, their main hunting strategy relies on stealth and teamwork rather than camouflage. Lions typically hunt in groups, using their strength and speed to overpower their prey.

Grasshopper:
Grasshoppers also do not have the ability to camouflage. They are known for their ability to jump long distances and their vibrant coloration, which often includes shades of green, brown, or yellow. These colors may help them blend in with their natural habitat, such as grass or leaves, to some extent. However, their primary defense mechanism is their ability to jump away quickly from potential threats.

Butterfly:
Butterflies, like grasshoppers, do not possess great camouflage abilities. They are known for their brightly colored wings, which often feature intricate patterns and designs. These colors and patterns serve various purposes, such as attracting mates or warning predators of their toxicity. However, butterflies rely more on their agility and speed to evade predators rather than blending in with their surroundings.

In summary, among the given options, only the Chemolea, or chameleon, has the remarkable ability to camouflage by changing its skin color to match its environment. Lions, grasshoppers, and butterflies rely on other mechanisms for survival, such as hunting in groups, jumping away quickly, or using bright colors as warning signals.