A green luna moth caterpillar curves on a gray surface.
A close up side view of a bright green luna moth caterpillar on a gray cement surface. The caterpillar is relatively wide and short. The left side of the caterpillar's body is curving, the left end of the caterpillar is facing the bottom left corner of the image. The right side of the caterpillar's body is also curved as the right end of it is facing the top right corner of the image.