TennisWools - All Natural Cat Toys and Tennis Balls For Small Dogs - 5 Pack - 100% merino wool SMALL SIZE: Small size (approximately the size of a golf ball) is great for any size cat or small dog CHEMICAL FREE: Safe alternative to other balls as these contain NO harsh dyes or synthetic rubbers GREAT FOR INDOOR PLAY: Can be fetched anywhere similar to regular tennis balls, but are also great for indoor play as they make little noise when bouncing HANDCRAFTED: Handmade in Nepal using 100% all-natural merino wool FERRETS WELCOME: Have a ferret? TennisWools are ferret play approved!