There is a woman with a dog at the park and I'm going to yell at her.
Why on earth would you yell at her?
I don't like dogs and this one is annoying and barking at me.
It is rude to yell at others in public. If you have a problem you can leave or ignore them.
Ok, I'll pay no attention to the dog.
It's good that you're making the choice to ignoring the dog. I get that it's irritating you, but yelling at other people is rude and you will probably rile the dog up even more.