MATERIAL UPGRADED:The dog interactive puzzle toys is virtually indestructible, making it difficult for even aggressive chewers to break it. It is made from food-grade ABS and is free from BPA, PVC, and phthalates. This completely protects your dog's health, so you can let your dog use it without any worries. And If the product has quality problems, we provide a lifetime return service..DOG PUZZLE TOYS FOR LARGE DOGS: Dog treat toy puzzles upgraded size 9.5 x 3.7 inch for large dogs to keep entertained all day! Challenging dog mental stimulation toys makes dog busy to get treat rewards by own and stop bad behaviors. Also large dog toys for medium/small dogs help fast eaters to slow eating pace and prevent bloat or indigestion with dog food puzzle.BEST SLOW FEEDING OPTION: The wheels on both sides of this toy are removable to allow for the placement of treats in the food bin and you can adjust the size of the leak hole depending on the size of the treats and the speed of feeding and slows down eating 3-5 times to prevent indigestion due to fast eating. The fun squeaker provides endless entertainment and stimulation for dogs to prevent boredom and separation anxiety..ATTRACT DOG'S ATTENTION: The treat dispensing dog toy with fun squeaking sound as it rolls, will get your dog more excited to run and look for treats. The toy special inner structure controls the eating speed of your pets and great for dogs digestion. Just fill the toy with your dogs favorite treats, when the slow food toy is pushed by pets, it will roll and then leak out snacks and the toy will attract dogs' attention for toy and crazy about it..IMPROVE INTELLIGENCE & IQ TRAINING: Adding the food in the treat dispenser toys for large dogs can easily attract your pet's attention. Your furry friend gets smarter as they play with the dog puzzles, learning how to chew and roll the ball to get dog treats to fall out, which is convenient to train your dogs. This interactive dog toys are perfect for interaction with your dog, promoting the bond between you and your cute dog.