I have always loved the splashes of color and design that show up on butterfly and moth wings. It's incredible how nature can create bio camouflage that mimics larger predators.

For instance this Atlas moth mimics cobra snakes. Notice the wing tips.

and this one has a back like a snake head.

Or this one which is uber cool. The face of a marsupial or lemur, even with whites in his eyes. That is pretty frickin cool.

For nature to come with that level of sophistication and beauty, really makes you wonder about intelligent design.