Caterpillars change their colors to match the stick that they are resting on. And they can do this even when their eyes are blacked out.
Researchers raised more than 300 larvae of the peppered moth (Biston betularia) in the lab. After the caterpillars grew up a bit, the scientists placed them in different boxes containing artificial sticks painted black, brown, green, and white (pictured). Some of the larvae were blindfolded using black paint. The blindfolded caterpillars changed their entire body color to match the stick they were sitting on as well as their seeing counterparts did, the team reports in Communications Biology.