zoey and her toys

My dog Zoey loves her stuffingless toys. Out of every toys shes gotten these are the first ones she hasnt destroyed. I can't figure it out but for some reason she really likes foxy, mouse, and her penguin. Everything else I buy she takes off the fur or eats their feet and legs. Whenever came up with these made a really good discovery. Now everytime I go to the dog store I get her something that doesnt have stuffing. Nylobones are also good because it keeps her occupied for hours. Anything that has peanut butter in it also keeps her busy. Usually I try to put peanut butter in it to keep her busy for hours.