AITAH for reporting a goldendoodle who bit my Chihuahua-terrier?

Sometimes, I feel like these posts can be one-sided so I will be as non-emotional as possible and stick to the facts.

I have a 16 lb Chihuahua terrier who is 3 years old. He came from a Chihuahua hoarder House (30+ Chihuahuas in a two-bedroom house). His overall behavior is sweet an observational acting as a mediator or referee with other dogs. When other dogs are playing, he will bark or when there is a fence between him and another dog but he's never bit another dog.

For the most part, I only take my dog out at certain times of the day, and all the dogs that come out at that time are very friendly with my dog. If two dogs are playing he may start chasing them and barking at them to stop because he thinks they're fighting... This is more him acting as a referee than actually trying to actively bite the other dogs.

Some backstory about the other owner, they own another dog that does not get along with my dog or a lot of other dogs in the condo complex. Neither of their dogs are well trained, both are extremely rough and hyper with all the other dogs, and has no recall trained. We have just learned over time if their other dog is in the dog park, we just walk around the building instead. Safety by avoidance.

On my way into the condo from taking him out in our condo's dog park, a standard sized goldendoodle (probably around 60 to 70 lb) was coming out of the elevator with the owner. I was in front of the elevator button panel off to the side with my two dogs at my heels with a tight leash. This is important because even though my dog barks when surprised, he did not bark at this dog. Their dog might have been surprised, not expecting to see a dog there. In this case my dog pulled on the leash a little bit so that he could sniff the other dog as it was coming out. I want to state that I did not let him sniff the other dog and kept him on a tight leash next to me.

As the goldendoodle was coming out of the elevator , it lunged and grabbed my chihuahua terrier by the head. Lifting it off the ground for a good 2-3 seconds before the owner finally smacked their dog's head to let my dog go out of its mouth.

My dog had a small puncture wound on the top of its head from where it was picked up by the other dog, but luckily no other major puncture wounds. Also good news is the dog did not shake my dog, however, my dog was obviously scared of its mind and shaking profusely. There was some blood but nothing extremely gashing.

Once their dog released my dog from their mouth, they quickly exited the front lobby where the confrontation happened. No apology, just a quick exit. I knew where they live so I knew I'd collect the information eventually.

I picked up my dog of course, and sat behind a concierge desk with the dog in my lap. I hoped that this would calm both of us down so that I can confront the situation with a clear head. I talked to the front desk and asked if they could get me the other residence information since I wasn't familiar with this owner. At this point I can only assume this other dog was vaccinated.

I called my husband down to the lobby so that he could speak to the other dog owner, since he's the more level-headed out of the two of us and I would have been more emotionally reactive. Over the phone, my husband and I both agreed that we should call animal control and create a formal complaint with our HOA within the condo complex.

The intention behind animal control is not for any retribution, but to document the situation if this dog attacks another dog again. Again, these dog parents have no training or discipline with their dogs in general. I don't blame the dogs, I blame the owners.

My husband came downstairs, while I took off for the emergency room to seek documentation, vet examination, and potentially antibiotics for any potential infection as a preventative measure.

At this point this is second hand, but my husband confronted the owner of the goldendoodle once he came back inside about 20 minutes later. He was trying to blame me for being close to the elevator with my dog, saying I should have been further back away from the elevator. But why would I need to do that if your dog is trained and friendly with other dogs?

There's some back and forth between him and my husband, but things escalated very quickly once my husband mentioned reporting to HOA or animal control. Through the conversation my husband even said "I was planning to report this animal control but I'll only document it through the HOA". Mind you, reporting this is required in our bylaws.

They turned around and said that our dog attempted to bite their other dog one time and they never reported us to animal control so we're assholes for even considering it. Mind you biscuit may have barked at another dog but has never bitten another dog. Usually that behavior only comes out when the other dog is being overly aggressive in the first place.

After some saline rinse, shaving his head, and getting inflammatories and antibiotics, the vet bill ended up costing $218. Of course I had to wait 4 and 1/2 hours to be seen. That's just time I won't get back. My vet said we were very lucky, but we will need to keep him crated for a few days to make sure that he rests since his neck was strained.

Am I the asshole?