Elmo's and 3rocks are definitely NOT raccoon proof. They have very nimble fingers and while their thumbs aren't technically opposable, they're darn close!!! If a 5 year old can fiddle with it long enough to get it open, so can a raccoon. (a five year old that can climb up a wall, hang from a roof edge or scale a fence.) Not every raccoon will go to the trouble, but once they figure it out, they'll dine on chicken.