Public spaces come with rules designed to create a comfortable environment for everyone.

But when one entitled pet owner brazenly ignored a “no pets” sign, another customer decided to speak up — and found himself painted as the villain for it.

You’ll want to read on for this one.

AITA for asking why they ignored the no dog sign.

I (33M) went to a coffee shop this past weekend.

As soon as I opened the door, I’m hit with a dog looking at me at hip level, sitting on a chair in this small shop.

This surprised him for multiple reasons.

The dog is indoors, and the door had a clear “No Pets” sign.

I watched for a second — this clearly wasn’t a service animal, as she was letting it interact with several other guests.

So instead of staying silent, he decided to call it out.

I asked her why she ignored the “No Pets” sign.

She ignored me.

I asked her, “Did you miss the ‘No Pets’ sign?”

She immediately said, “I think you should stop harassing me.”

She continues to play off his concerns, and soon other café-goers start to turn on him too.

All I was doing was asking why she ignored the “No Pets” sign. This lady played the victim and called me an AH.

Another patron stepped up for her, and the dude said, “Why’s it an issue? Who cares?” He told me, “Don’t be an AH and drop it.”

But he stands his ground regardless.

I waved the guy off, told him I care, and said I don’t like dogs. I said it’s not hard to not bring your dog to a coffee shop that doesn’t allow dogs.

By that point, it was my time to order. I complained to the employee, who didn’t seem interested in enforcing anything.

The owner left on her own.

AITA?

Even though he was just standing up for the rules, everyone else seemed to see him as the aggressor.

What did Reddit think?

There’s a “No Pets” sign on the door for a reason.

This woman’s entitled attitude was the most frustrating part of the story.

Pet owners may love their pets, but they shouldn’t be forcing into places they don’t belong.

Why do certain people seem to think the rules don’t apply to them?

He tried to advocate for order, but the other café-goers had already chosen chaos.

If you thought that was an interesting story, check out what happened when a family gave their in-laws a free place to stay in exchange for babysitting, but things changed when they don’t hold up their end of the bargain.