At least, the cookie packets My dog seems to be nuts about them...She's ransacked the trash twice since I recently threw out an empty cookie packet, specifically going after that little morsel. Every possible molecule of crumb clinging to that wrapper has been licked clean.
So if some unenlightened soul tells you, "MRE? I hear even a dog won't eat those!", you can tell them that not only will they eat them, they'll go back for seconds