Cats are more vocal with us because a lot of a cats vocal range is out of the hearing range of humans. We can’t hear them. They try different noises to see if we can hear them or not, though in a cat’s eyes we’re basically deaf. Add that to the fact that they will bring us ‘gifts’ because they don’t think we can take care of ourselves and hunt for food many cats actually think of humans in a way similar to deaf and incapable kittens.