Huxley & Kent For Cats are wonderful, realistic-looking toys that cats love to bat around, pounce on and rub on for playtime. Each toy is made of soft baby plush and includes crinkle and organic catnip inside for extra exciting play! All toy material used is safe, non-toxic and has no heavy metal. Huxley & Kent is dedicated to safety. All toys are made with non-toxic dyes and comply with the US Children’s toy standard ASTM-963 and European EN-71 rules.