Fishy Fun Cat Toys are filled with catnip and catnip stalks, for a more fun and crunchy feel. Its nylon shell is durable and will not run when pierced by kitty teeth as it satisfies your cats urge to crunch, teethe, and chew. Crinkle fins and ribbon tail offers added interest and amusement. Fishy Fun Toys come in a two pack for twice the fun!