Catnip Ball With Feather (U.M.V 3Uds) Toys With Catnip Cat. Ball made of catnip with a diameter of 4.2 cm. It has a pen to further motivate and encourage cat play. It is a toy especially suitable for the most demanding felines since catnip generates playful behavior and helps them release enkephalins, substances similar to endorphins, reducing anxiety and creating relaxing and pleasant spaces. Color: GREEN