chew toys are made of super-strong nylon and food-grade bacon, peanuts, chicken, maple wood and jack salmon. We use no chemicals or artificial flavors. Each of our products are Made in the USA and is 100% USA source. Inspired by the protein of the sea, the Fishbone is flavored with real Jack Salmon, so your dog will go nuts for the smell of it. The nice thing is, you won’t notice.