Vickie, I think you are going to find this is great opportunity to make the most of all the dogs features. But the hair is going to play a very small part in this drawing except where it is important.You can make a real feature of the eyes - If it has black rims then you can make them look smooth and make a real feature out of any water that has collected at the base of the eyeball. Play up the texture of the nose, it's form, make the most of highlights. The same goes for gum detail and flews. Lay it on thick and enjoy yourself drawing everything except hair! 
The hair is probably only going to be important in the coloured area around the eye - perhaps around the nose where it changes direction - where it meet the top lip and probably overhangs it a little.
I other words - don't worry about the hair at all. Concentrate instead on getting the shading correct to give it form then add emphasised touches of hair, as I explained. This will give the viewer's eye the clues that it needs to understand the texture of everything white - with just a few clues and a few subtle shadows around white hairs it will read the whole dog as being hairy.
I've got a Bull Terrier drawing that I had the same problem with. When I've time I'll scan it and post some bits of here so you can get an idea of what I'm trying to say. (Of course I may have talked myself into a corner here -- my memory of this terrier might not have anything to do with what I was talking about
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Finally, you need to think about how you are going to give a hard edge to the dog - it being white on white paper. Personally I usually invent some false lighting that allows me to round the edges off a little and add a faint shadow...... in the meantime here's a low-res version I just found.
MIKE
www.SibleyFineArt.com
www.Starving-Artists.net