Most helpful positive review
4 of 4 people found the following review helpful
I wouldn't say "invincible"
on December 26, 2006
I have a 1 1/2 year old Presa Canario. This dog has destroyed in a matter of minutes to 1 hour most every toy I've bought her. These rings have actually lasted almost 4 weeks, which is impressive to me given her history. However, in the last week she has made it clear that these are good toys to play rough with, also providing a medium degree of supervision. No, they're NOT indestructable, but I'll give them an eight on the durability scale.