It is very thick & hard rubber on each end. The red part is very very hard. The only weakness to be honest is the middle section that actually says KONG on it but it is still thick but if you were to twist it while tugging with him i would think personally that that would be the 1st part to give i think it would take a lot to break it though. Hope this helps with your question. Thank you for asking :)
Jays jazz, you have a beautiful Dogo that looks just like ours! We won't buy anything unless it's kong for the same reasons. Look up "kong extreme". We have the XXL wobbly looking one. We've had it for over a year now.
that is a good pic of them. the one is a pit bull is the other one i can't tell for sure? I like it when people give pit bulls a chance because they have a bad reputation & they are really great dogs :)