Monarch butterflies live in North, Central, and South America as well as Australia, some Pacific Islands, India, and Western Europe. Their markings include bright orange wings covered with black veins and rimmed with a black border and white dots. Females have thicker veins in their wings. A monarch's brilliant coloring tells predators: "Don't eat me. I'm poisonous." The butterflies get their toxins from a plant called milkweed, which is their only food source in the caterpillar stage. An animal that eats a monarch butterfly usually doesn't die, but it feels sick enough to avoid monarchs in the future.
