SAFE&NATRUAL MATERIAL FIRST: dog toy are stuffed with natural cotton and sewing with waterproof corduroy surface(avoid dog’s saliva entering the stuffed cotton) which is 100% safe to your pup, also the hippo legs are woven with thick hemp ropes to guarantee its durability for dog’s chewing and teething. 2 WAYS OF SQUEAKY SOUND: This dog squeaky toys has a built-in vocal bladder in the middle of the hippo and a crisp sound crinkle paper in the tail, both of them can create sound when pets playing with it, fully arouse their interest and chewing instinction to have fun, no more boredom and other behaviour like destroy things in the house. INTERATCIVE WITH YOUR PUP: Dog love to play with us, this dog rope toys are also designed to have more fun with our dogs, toss&fetch games, a tug of war games etc, more daily entertainment with your pets would helps to relieve their depression,boredom and anxiety, also can train their IQ and strengthen relationship between you and your pup. DENTLE