I have to agree I don't think dogs can tell which breed is which. I guess it's the dog its-self
I have to disagree with this statement and let me tell you why.

When we were at the Pawsfest on Sunday I seen 2 huskies and walked over to them. The first thing Roxey did was growl at both of them. She pretty much had a problem with them all day We walked by so many other dogs and she'd sniff and walk away. Not once did she growl at another dog.
Also we went to PetsMart for a play night and she got along wonderfully with all the dogs until another husky came in. Again, the first thing she did was go up to it and growl.

Now, I'm not saying she hates other huskies. I think she's just trying to be dominate with them and show them she's boss (or so she thinks).
Given time I think she would have played with these dogs but of course she growls and the owners don't want her near their dogs

Woah, sorry this was so long!