Correct.

But what I think should be argued here is that we percieve existance anly as how much our sensory and brain capability can.
Meaning evolved aliens can 'see', or 'be' in the universe muchmore than we can. This principle is what is meant by the OP for cats not seeing us like we are, but, like you said, it's not like that, because they need to see us as we are(for survival reasons), and they probably do.