Intelligence is not well-defined even for humans, and we have little understanding of what goes on in an animal's "mind", yet people like you use terms like IQ for cats like they're established facts. For all we know, it could be that some animals/cats just don't "care" as much about interacting with humans. Just like some humans do.
> we have little understanding of what goes on in an animal's "mind"
Maybe you do. Behaviorism went out with disco and bell bottoms, and good riddance; more recent researchers often take an ethological approach - Goodall, not that pervo freak Skinner - and what we've learned from corvids only scratches the surface of the extent to which we're lately discovering that animals other than humans are a lot smarter than we tend to give them credit for.
The human animal, on the other hand - well, that you put quotes around "mind" in your comment earlier suffices alone to demonstrate that your confident assumption of knowing what you're talking about here lacks quite a bit for congruence with reality. Hell, I've met crows who proved to have a very accurate theory of mind for me - much more so than you here give the impression of having for them.
Same rules apply to humans as well. Interaction early on develops personality and intelligence varies genetically by a wide margin.