They have to have been fairly challenging dogs as I have never noticed a dog demolish 1 of these. But to individuals who have defied the difficult, I recommend the aptly named Kong Serious. Disclaimer: This Web-site includes affiliate and/or referral one-way links which may or may not make revenue https://kameronjymxg.blog2news.com/36990039/a-simple-key-for-dog-toy-set-unveiled