For the most aggressive chewers like Herschel ... You can fill it with peanut butter, the best dog treats, kibble, or the brand's Easy Treats. Saril's dogs engage with the Kong whenever it's ...

It's designed with side walls that you can fill with treats or peanut butter to keep your dog's attention. www.amazon.com, www.amazon.com Promising review: "I have an aggressive chewer.