I recently adopted a Weimaraner whose sole purpose in life is to destroy and eat all products in the household. Kong toys (except for the largest red ball and black pyramid/ball) are gone in 10 minutes, stuffed toys are a joke, nyla bones are a no-no. My friend gave me the pink Bumi toy and it is still here several months later! He has since taught our boston terrier cross to seek and destroy, and these two can play tug of war to their hearts content with the Bumi. There is a puncture mark at each of the ends, but at this point no evidence that it'll be "dead" any time soon. I have just purchased another one as well as some jive balls. I hope that they will continue to keep them busy! Thank you for your product.