Hi Lauren,
Welcome to NWP. I took a look at your website last night and then took another look today (I always like to look a bit before I actually make any comments).
First, I really like the look and feel of your website. Even though it is a flash site, it loads up very quickly (at least for me with the T-1).
The photographic content of the site, I think, for the most part is pretty solid. Images #1, 3 and 5, 10 and 11 are great (mostly cats, I will add.

).
However, I think some of the other shots could use a little PS work. This is particularly evident in the shadow and midtone areas of the shots. I think that this detracts from really getting to see the dogs (and other critters) personality. Let me give you a few examples. Images # 6 and # 7 and 12 come to mind. #12 is interesting, and I think intentional, however, the darker eye is not dark enough to really provide a full shadow effect, and it is not bright enough to provide symetry - so it is neither bright enough or dark enough.
The rest of the layout is great. I think your prices are more than a bit low. Also, when you give the images - are you providing high quality jpegs that can be printed at any size, or just at 4x6? Because if you are giving full size files, your first package is worth a lot more than your second package - for 1/2 the price.
James