>Is chuckling or dooking known to be anything but a sound expressing >happiness, a desire to play, joy, etc.? I would take a gander that she is probably Deaf. Have you done anything to check that out yet? Squeek a toy or something behind her head, see if she reacts. Likely she is deaf and has never heard a dook so doesnt know to make them, and its just her way of making a 'noise' that she registeres, with a strong vibration in her throat. [Posted in FML 5895]