I was bitten by a dog once and the owners immediately started trying to explain to me why it was actually my fault that I, standing there minding my own business, made the dog bite me! They eventually remembered that I got bit and asked if I was hurt.
I lived in an apartment building next to some people with a new puppy who barked at night - when I complained to them about it I got an earful about how its ok for them to violate noise ordinances and disturb my sleep, it’s a puppy, it can’t control itself, how could I possibly be so mean!?
I refused an invitation to a party once because they had a lot of dogs and I’m very allergic - I was told I was being super rude and that I should just pop some meds and get over it. I asked them why they expected me to make myself miserable for the dogs sake when they could just kennel it for the weekend?
I own fish - the amount of times someone has told me that my pet is “lame” or “silly” or “boring” and that I should have gotten a dog is ridiculous. Like fuck off.
TL;DR Dog owners can be really obnoxious and self-righteous. There’s a mutual understanding that if people can’t control their children, they are bad parents. But not being able to control your dog is for some reason much more accepted.