So I went out and bought the Mouse Toy from Walmart that was recommended on this site. Boy, was I in for a big surprise!! Muffin went absolutely CRAZY when the toy starting lighting up and squeeking. At 5 months old I hadn't really heard a bark out of her except for a little squeek now and then even though her big brother Maltese is a wild man with the barking. Well let me tell you what...my little girl can BARK!!! She was so scared of that toy that she was running around in circles and barking up a storm. My husband and I were cracking up until we realized that "Oh s--t, she CAN bark!" I guess the little mouse toy is going to go to the big toy heaven in the sky because I don't need to encourage her.