KONG Naturals are ecologically responsible cat toys. All materials and dyes come from natural, renewable resources. KONG Naturals Crinkle Fish with Feathers is specifically designed to appeal to your cat"s natural hunting instinct. The crinkle sound instantly sparks curiosity, and the combination of natural fabrics, natural feathers and catnip will provide hours of exercise and entertainment. KONG Naturals are more than just cat toys - they"re fun with a purpose.