AP Blue Sky Science: Why do butterflies stay in a cocoon and for how long? May 22, 2019 Facebook Twitter SMS Email Print Save Caterpillars start out as tiny creatures. Eventually the caterpillar will be ready to transform into a butterfly or moth in a process called metamorphosis. Tags Wire Field59 Blue-sky-science More video More evidence links broken heart syndrome to cancer Police warn flushing drugs could create 'meth gators' Land crabs take over a Florida man's yard and it's all caught on camera Facebook Twitter SMS Email Print Save Most Popular Localized storm with estimated 60 mph winds wreaks havoc in Mechanicsburg Leroy D. Sheriff 5 Questions: Young Carlisle entrepreneur finds new uses for old games Hook & Flask brings a craft distillery to downtown Carlisle Data shows further tightening in Cumberland County housing market View All Promotions promotion Research decades of articles the easy way! promotion spotlight What should you be driving?