*shrug* I don't know what the operative definition of intelligence being used here is, so I won't comment any further on that as a singular factor. That said, dogs are obviously more social and communicative, and are admittedly more "useful" than cats in terms of being adaptable/malleable to their environment and external influences, but at the same time, cats just seem to have more human-like emotions to me. Dogs have very vibrant and recognizable emotions, but cats communicate in this very subtle, primal level that dogs kind of just sidestep with affability and implicit acknowledgement of their master's superiority. A dog will always be your bitch, and if that's your thing, cool, but a cat is more of a psychological equal as a pet and is just so much more sophisticated and independent.