My dog is a boxer/lab mix and just destroys toys. I purchased the Galileo super in hopes it would last, and it has. He LOVES chewing on it for hours on end. I bought all 3 sizes and he switches off chewing on them. He has worn down the end nubs some, but overall the toy is still going strong after 1 month of use. This is far longer any anything else has lasted (stuffed toys > 5 min). I will buy this again if he ever wears it down.