Your cat can have squeaky good fun even when you are not at home. Hanger tension adjusts to any standard door, and it will dance and bounce with each swat of your cat's paw. The electronic RealMouse&trade sound module ""squeak"" will keep your cat entertained for hours and hours. CT-10159 is perfect for mental and physical stimulation, it will keep your cat agile and healthy. CT-10159 Features: Play-N-Squeak w/ Door Hanger Pet Toy, Fun & Mentally Stimulating, Great For Healthy Solo Cat Play, Hanger Tension Adjusts To Fit Any Standard Door, Catnip For Added Cat Attraction, Only Toy w/ Electronic RealMouse&trade Sound"