I've had my two girls for about six months now, and only recently one of them has begun to not only hoarde her food and treats, but also SORT it. It's so strange. They have two food dishes which are always full - I know many reccomend against "free feeding" but I find it works well for the girls. They never fight over food, it's just that Tango seems to like to stash it places (and then she forgets she did this, and Mango ends up eating it). There doesn't seem to be any competition for food so I'm not sure why it's happening. As for the sorting, Tango puts her carrots in a different place than her apple bits which go in a difference place than her peas. So weird! Anyone elses do this?