I think that cat people (as opposed to dog people or plain ol’ animal people) tend to be very aware of their pets’ mental/emotional state, whereas dog people tend to be very aware of what they wish their pet’s emotional state to be.
Cat people cater shamelessly to a cat’s preferences, yes, and they often have an exhaustive, almost creepy knowlege of all the little things kitty does or doesn’t like. But this knowlege is about things like food, petting, napping spots, that sort of thing. When an owner tells me the cat likes this, that, or the other thing, and I offer that, the cat almost invariably responds positively. Same thing if the owner tells me the cat hates something.
Dog people, on the other hand, tend to attribute their own opinions and emotions to their pets. The dog hates country music, or likes to watch MTV, or doesn’t like the color we painted the living room. Snoogie-boogums wuvs his sweater, doesn’t ums? These are the owners who frantically insist their dog is far too nervous to endure an exam without them, while the dog is napping in a kennel. (If you’ve ever seen Best in Show, these are the “Busy Bee” folks with the Weimereiner who is “freaking out.” That couple, they’re the epitome of dog people.)
I’ve never had a cat person tell me their pet is their baby (I think they take it as a given that you already know that), but about two in every five dog owners give us some variation of that comment. Cat people fairly frequently refuse to go somewhere because they have to take care of the cat, yes, however, they rarely insist on taking the cats on vacation or to work with them. Dog people, though, often insist on taking their dogs everywhere with them.
So, no, I can’t say that I’ve noticed cat people being more emotionally dependent on their cats than dog people on their dogs.