Transcription: Getting and caring for caterpillars. Butterflies and moths usually flash past so quickly that it's difficult to get more than a glimpse of them. But you can learn a lot about these insects as adults or caterpillars by keeping them at home and observing them. You may even be able to raise a moth or butterfly from caterpillar to adult, watching it change before your eyes. You can collect caterpillars, pupae, and adults in the wild or buy caterpillars, cocoons, or chrysalises from a biological supply house. Collecting on your own is more fun, but mail order information is provided at the end of t ...