How durable depends on the dog. Gull loves his Cuz and he's an average chewer. He hasn't made a dent in it. It'll probably last forever.

It is awfully loud though. He just walks around continually squeaking it, until it really gets on your nerves. Here's a lil' video to give you somewhat of an idea what you'd be getting yourself into :

http://www.nothinbuttdogs.com/toyfromhell.htm

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