The comic is making a joke by doing something different to the established character. In disney properties, Pluto can't talk and it's kinda weird that he is a dog who is treated like a dog, while goofy is a dog who is treated like a person.
Everyone above you is referring to Pluto from the disney cartoons, instead of the altered Pluto in the comic here.
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u/darkcrazy 1d ago
Except this pet is intelligent enough to comprehend the social situation and speak their mind in full sentences, so it's a person anyway.