Ok, My dogs don't like ANY dogs if mine are restricted to a leash. They will bark, growl, snarl, and jump to try and get at the other dog. But when I let them slowly approach each other (on the street as to not trigger any property issues), They sniff each other and then they are fine. This happens at least twice a week when we see other dogs during our walks.
They do the same thing if they stare out the back window and see a stray dog. But once they get let outside, I can lead them right up to it, and they will calm down.
I believe much of it has to do with the restriction of the leash. Its common knowledge that dogs tend to have a burst of energy when they are released from the leash or out the door... Much of what, my dogs at least, show is that energy being built up, but once they are released they are fine.
I'm not in ANY WAY suggesting to let your dog loose and run up to the other one, But It couldn't hurt to CAREFULLY and not on your or the other dogs property, Slowly introduce in order to see if it is really DA or if it is curiosity combined with restricted energy
p.s. I have 4 pitties, They all act the same way, but much of it is "monkey see, monkey do"