Instincts by SmartyKat Love Mates Feathery Cat Toys Set of 2 releases your cats inner instincts with feathers and multi-textured plush bodies, mimicking the feel of prey they would find in the wild. Containing HappyNip catnip and silvervine, a natural extra-exciting blend to drive cats wild, SmartyKat Love Mates will soon become your cats favorite prey. Toys with HappyNip, their proprietary blend of catnip and silvervine, encourage cats to frolic, romp, and play.