"This is the best food toy we've ever bought. Our 6-pound chihuahuas love them (we bought two), and so do we. This is the only treat/food toy we've found that they can manipulate, but that never rolls under the couch/TV stand/etc. Finally - we can just let them eat/play without having to be there to retrieve the toy every 10 seconds. It's just tricky enough to give them stimulation, but dispenses food often enough to keep their interest."