It's usually common in the more vocal breeds, (Bengals, Siamese, etc.) and as far as I understand it, it's a mix of frustration and excitement. I make the same noise on first dates.
(, Thu 27 Nov 2008, 17:43, Reply)
but it's more of a breath in, like Dr. Lecter eating liver with a nice cianti
Its a little scary
(, Fri 28 Nov 2008, 12:27, Reply)