Stockbridge resident Molly Howlett encountered this brute of a caterpillar inching along a grassy trail north of Stockbridge. When fully extended, Green Giant stretched 3 or 4 inches long with a 3/4 inch girth. Should we sound the alarm that aliens have invaded, or will a reader please identify the kind of moth or butterfly that this docile creature will metamorphose into? Photo credit: Patrice Johnson