Western tiger swallowtail

A young caterpillar looks just like a bird dropping, so hungry birds leave it alone.

Older caterpillars turn green and get two big fake eyes, so they look like a little snake.

When it is scared, the caterpillar pops out a forked orange thing from its head, like a snake's tongue.

Boy butterflies gather at puddles and muddy riverbanks to drink water and minerals.

Its chrysalis looks like a piece of wood, green in summer and dark brown in winter.