I would have to say that some dogs do have strong feelings to other breeds - and there are some people (like Staci) who can back me on this. My Dazzi is a golden retriever/spaniel mix. She does not like German Short Haired pointers at all. She will go after them if they come into the dog park. (Althouogh we have not been going nearly as much and now that she is living with 8 other dogs seems to be mellowing out some). When we first started taking her to the dog park she would go after Golden Retrievers - and yes she did go after Keegan and scratched her nose up pretty good. After that though she would "Protect" Keegan from other dogs. Certain Cocker Spaniels also set her off.

She has seen a lot of Australian Cattle dogs though and I don't remember any of those being a problem for her.

When we were taking her almost every day to the dog park we would leash her when a golden retriever came in and put her in the time out pen when a German short-haired pointer came in. She has always been very protective of her "pack" - meaning our dogs, Amy's dogs and Keegan. Now I think maybe there are just too many or she decided they needed to look out for themselves because she is too busy doing other things.