[QUOTE= Border collies are working dogs -- they are not suitable as only family dogs, and you run the risk of having a dog that becomes frustrated and acts out in problematic ways.[/QUOTE]

Hmmm.....neither of my 3 Border Collies are working dogs. They are family dogs. I guess I'd better not let them read this or they'll turn on me.

Honestly though, yes, they need mental and physical stimulation which is why I constantly try to keep them exercised and busy. A little NILIF doesn't hurt either. Having just one could pose a problem as yes the dog would get bored and destructive if he doesn't have anything to do.