Mmmm, peanut butter. Most dogs love it just as much as most humans. This bone is a delicious mix of peanut butter and comes in two sizes: 2-inch bones or training size. The ingredients are wheat flour, peanut butter, and water. They are packaged in an 8-ounce resealable bag, and no refrigeration is necessary. These treats are crunchy and will promote good dental health. You can even add a second flavor for just $5.