Neither, he’s just a dog. Is your (hypothetical) real-world dog disabled? Is your dog engaging in kink? No, it’s just a dog, and we’ve generally accepted that it’s ok to own/adopt one into your home.
Is a marmoset that is owned/adopted as a pet by a fellow simian human somehow mentally disabled or engaging in pet play? No, it’s just a monkey, and sometimes they’re pets.
Just because a human and a marmoset are both simians, both primates, doesn’t mean we treat them the same. The same is clearly the case for Goofy, Mickey, and Pluto.
There’s a lot of examples of non-personified cartoon animals in those comics and cartoons, typically in the background. It’s just how the world works, animals owning animals, just like us.
But they’re not the same, that’s what I’m getting at. One of them is a man who walks and talks, and the other is just a cartoon dog. Idk why that’s so hard to understand.