It seemed like a good idea at the time: Buy a house with a two-acre property, let our energetic herding dog have the run of the place and spend blissful summer days digging side by side in the dirt with her. And it was blissful, watching Mattie carve out her napping spots behind the ferns and tall...

If I hadn’t been watching with my own eyes, I might not have believed it myself. But here she was, a monarch butterfly, intently probing a dead plant in the middle of a vibrant patch of flowers she all but ignored. Unaware of the scientific literature, she didn’t know that her kind wasn’t supposed...