Artists are an interesting breed of people. Their imaginations and ingenuity are very creative. Today we find a wide array of materials available to use in artistic expression. In ancient times trial-and-error in the use of what nature provided was the main means of artistic endeavors.
Chameleons are an interesting creature. Their highly developed ability to change color is very intriguing. In Ancient Peru their urine was used for painting pottery. These artistic pieces were handed down to children as family heirlooms. The images on the pottery is quite unique. Some of these images are of fantastic creatures.
Source: Painting with Reptile Urine