Chiwava Dog treats toys pig are made of natural rubber.It is non-toxic and easy to clean. Food slow feeder design, can apply peanut butter, dog’s favorite food, put in grits all kinds of dog food and so on. this toy encourage a slow and lively diet. Suitable for interactive dog toys, indoor & outdoor play. Great for retriever training, Chewing,IQ, pulling, fetching, Teeth Cleaning & teaching dog commands and skills.