Cats, and the nature of the animal.

Cats, Dogs, Kids,

have no Consideration.
 

And, alas, they're right - researchers have found that cats don't see their owners as a source of security, meaning they are much more independent and less reliant than their loyal counterparts dogs.

Aloof and detached, cats don't suffer from separation anxiety and any noise they make when their owner leaves is probably just because they are bored or frustrated.