My dog got into a fight today. I'm pretty sure she started

Sounds like it wasn't much of a fight and no one was hurt. If you didn't see what started it/triggered the conflict, it's hard to say why it happened.

But there are lots of reasons two dogs might get into a conflict/scuffle. Maybe one of them was guarding a resource (food, toy, etc.) Maybe one of them was getting in the other's space in a way that wasn't appreciated. Maybe the way one of the dogs communicates didn't translate well to the other dog and they misunderstood each other until one of them was uncomfortable/felt threatened. Who knows. But it's relatively normal for dogs to communicate that another dog overstepped some kind of boundary with some growling/snarling/snapping. Sometimes these little conflicts can escalate and look a bit more scary/flashy. It doesn't mean they necessarily "hate" each other, just something went wrong in their interaction so they had a scuffle.

I wouldn't worry too much about it. Just make sure to be vigilant when she's around that other dog in the future, and if you see there is some kind of tension between them, avoid having her interact with that particular dog.

In my experience some dogs just don't get along no matter how well socialized they are.

My husky girl likes other dogs. The only two scraps shes ever been in have been with other female huskies, oddly enough. I've watched the other two dogs she's fought with and they seem as friendly towards other dogs as my girl. Now I just have an unspoken agreement with their owners to give each other a wide birth if we pass each other on the street/at the park.

I've also met dogs at the park that hate dogs of certain genders/breeds. I assume that kind of behaviour is due to some kind of traumatic event though.

>>2308676
Dogs need space to get acquainted OP. Sounds to me like one of the dogs invaded the other's personal space, most likely the other dog which caused your dog to retaliate.

My female Golden Retriever is ok with dogs being around her but she might snarl and lunge at a male if he gets too close with his nose to her hind area, she might do the same to a female if she gets too close to her face, even her best friend.

>>2308686
>>2308710
Her dog approached me and my dog first. It sniffed my dog, went over to me, sniffed my dog again then came back to me and sat right by my feet. I gave it a pat, turned to talk to the lady. Then my dog sat in front of the dog which was still sitting next to me, looked at it for a while I guess, put her arms up on it's shoulders (I assumed to wrestle) then pinned it and it all went off.

It was super loud, no yelping just intense growling and neck/scruff biting. I've only experienced it twice when my dog was 100% not the instigator and she never had any punctures after. I just stayed calm (my dogs a herder, reactive to screaming/nervous energy etc.) and was mostly worried the lady would get bitten when she grabbed my dog from her harness to try to yank it off hers.

I guess I was just seeking clarification if this was normal dog behaviour because I felt awful about it and don't want her injuring someone's dog. She's not perfect, is occasionally a jerk to certain dogs but it's never escalated like this so quickly before I had time to step in and stop mean play. All my previous dogs have been incredibly chill labradors. Anyway, thanks for the replies.

>>2308706
>The only two scraps shes ever been in have been with other female huskies
In this case I saw both the owners a couple of days ago while they were leaving and I was coming and we remarked about how similar they were (basically same cross breed, same colour down to the white markings on their chests, same age and sex). I know females are more prone to fighting females. So maybe pecking order? idk

A friend had a lab X who was bitten on the stomach by a small dog when she was 1 and they had to avoid every small dog they saw until she died at 14. My last dog refused to interact with beagles because of an incident with one.

>>2308766
>Then my dog sat in front of the dog which was still sitting next to me, looked at it for a while I guess, put her arms up on it's shoulders (I assumed to wrestle) then pinned it and it all went off
Sounds like the other dog just wasn't cool with being pounced on so suddenly/by a dog it wasn't familiar with. It's not weird that the dog would react to say "hey back off!" Sounds like your doggo just came on too strong and got told off for it. That's ok, and perhaps she learned something from this interaction! Just be cautious if she's ever around that other dog again, and if there's tension from either dog, redirect her and go play somewhere else

>>2308766
She didn't do a play bow? The other dog probably got worried at being jumped on for no reason. You know, front paws down, ass up, wagging tail, happy grin?

>Do some dogs just fucking hate each other?
There's a dog mine absolutely hate and I don't even know why, can't even approach the other owner. Both dogs look about ready to kill each other everytime.
Then there's another that barked on her when she was a puppy (she was smaller than him then, now she's like 5 times his size and weight), when she sees him, she barks once or twice until he cowers behind his owner and then she starts walking... haughtily, I guess? The same bitchy walk when she finds a stick and she doesn't want to share it. She goes along fine with that dog's brother, though.