There are various types of cat sounds. Studies have described 16 different voice patterns. These cat vocalizations are classified into three groups: murmur patterns, vowel patterns, and strained-intensity sounds.
This includes purring and other cat vocalizations with the mouth closed. These cat sounds are usually associated with contentment and friendliness. Cat purring is a very interesting phenomenon that has been greatly studied and I will go in more detail of this in another link.
The vowel sounds include most of the conversational vocalizing that we are most familiar with. Of course the Siamese is notorious for being overly talkative and conversational with these types of cat vocalizations. Most owners and breeders agree that the Siamese and other Oriental cats tend to be the most talkative than any other breeds. Of course your Siamese loves for you to talk back to him. These words include meeow, yow, mow, ngow, and mow-wow. Most of these indicate greetings, requests, demands, denials, and frustration. One of my favorite cat vocalizations is the “silent meow”. When your kitty looks up at you, tilts her head and meows silently, she is telling you that she is very pleased.
Strained intensity sounds
These sounds include hisses, growls, and screams used in attack and defense, and during mating. The call of a female in heat (especially a Siamese) can sound like a crying human baby that is very loud and the sound travels far. The male calls also when a female is in heat, calling a high-pitched chirrupy love song. The scream cry of a female during copulation is also unique. One of my favorite cat vocalizations is “cat chatter”. This is usually brought about by seeing a bird or a squirrel through a window. This sound is made from a combination of lip-smacking and teeth-chattering along with little squeaky sounds. It is so cute! My calico chatters intensely at insects that come into the house before she brings down her prey.
Cat Sounds to Cat Language