DURHAM, N.C., May 21 -- North Carolina State University issued the following press release:

Anesthesia makes life-saving procedures as pain- 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.

Samuel Tucker is a first-year anesthesia resident at North Carolina State University's College of Veterinary Medicine. He recently published a study on the most effective way to anesthetize p...