The secret language of cats

You suspect Fluffy is dissing you? You're probably right:

Remember that vocalizing is not your cat's preferred mode of communication. A cat's "first language" consists of a complex system of scent, facial expression, complex body language, and touch whereas we humans communicate primarily through sound. Cats soon realize that we don't understand the non-verbal signals they send to each other, so they vocalize in an attempt to communicate in our language. By observing which sounds elicit which actions from us, a cat is always learning how to make requests (or demands).