The beauty of delicate butterflies is a joy to behold as they flit from flower to flower. But how does a squishy, crawling caterpillar turn into a delicate, flying butterfly? Our Amazing World Series, Advanced, explores the life cycle of monarch butterflies in this enchanting nonfiction book for young children. Did you know that the caterpillars that become monarch butterflies only eat milkweed? That’s where the monarch butterflies lay their eggs so the caterpillars have food when they’re born. The beautiful pictures and illustrations engage the imagination.