Hey Alan,
Thanks for the comments. These photographs were taken around mid-afternoon when the sunlight streams through some trees and past some blinds into my living room.
Bella's got patches of brown and white hair on her head and the white is so bright that from most angles incident light just "blows the highlights". That's pretty much what it looks like to the eye (albeit not *quite* as bad) and I have found it very difficult to make an exposure such that her face is evenly lit without blowing the highlights.
The right way to do it would be to use a reflector but she doesn't have the requisite patience
Glad you liked the photograph of her paws. It looks better in the full-size and I am planning on having it printed. I might retake that a few times though.. I am not entirely happy with it.
Nikhil