My friend has a whackjob dal mix, really fearful and aggressive. There are times when it's unavoidable that her and Rocket have met- such as her meeting me for a hike, when she promised she wouldn't bring her but then did. *sigh*
She bites at Rocket, growls, lunges, charges, the works. Being the Don Juan that he is, he's more "Why you gotta be that way, baby?" than anything. However, he has gotten tired of her crap before and man-- he makes it fairly clear. I called him off fast though, because she didn't look like she was willing to accept it without a hard schooling.