If you need to anesthetize a butterfly, here's the best way to do it

Anesthesia makes life-saving procedures as painless and stress-free as possible for the animals we love and care for. But not a lot is known about the effects of anesthesia on animals that we don't typically consider pets—like butterflies and other invertebrates. Insects are often valuable members of nature centers, zoos and museums, but even if they're just being evaluated in the wild, they can need anesthesia during physical examinations and injury treatment.