This article is from the Korats Breed FAQ, by Dennis Ganoe email@example.com with numerous contributions by others.
Korats vary widely in their vocalizations. Some will be exceptionally
quiet and others will scream. Every Korat is capable of an
incredible variety of sounds, from a quiet questioning chirp, to a
full voice roar. They generally "speak" only when they have
something to say, or to alert you to their needs.