Butterflies remember being caterpillars

Imagine dissolving into liquid and then reforming, yet still remembering your past life! That's what happens inside a chrysalis. Scientists discovered that butterflies retain memories from their caterpillar days, even after their brains completely restructure. Researchers taught caterpillars to avoid certain smells with mild shocks, and surprisingly, the adult butterflies still avoided those smells. This suggests some neural information survives the incredible transformation.