Where can I find this “Wooly Bully” dog toy?

egg shaped, red, fuzzy, found at Wal-Mart, sings “Wooly Bully”, vibrates, goes “WHEEEE” & “HE HE HEEE”… it’s like catnip for dogs. My dog was in love with this thing and, well, now another one bites the dust!!! [note: comes in various colors and sing’s different songs}