i don't know if this is standard for all chins, but velvet:
-clicks teeth when annoyed or irritated
-makes the same hrff sound of ottis in Beccaleigh05's video when in heat
-makes a sort of growl that i cannot describe with conventional English letters, its kinda throaty, like it involves the uvula (probably misspelled that, the dangly thing in the back of your throat) when really ticked off (she was real unhappy with me for about a week after we had to move her cage) also accompanied by spraying
-doesn't really seam to have a happy sound, just cuddling, playing and popcorning... she really did like that jingle bell tho...