The color and white balance looks good. Either you have motion blur or its out of focus on the second one. Check your shutter speed.
Other ideas for photos are having people hold them and give that same look. It seems the cats/dogs need to have a look of already being a pet and eye contact for a good photos for adoption. The first photo in this thread obviously is poor for the fact it makes the cat look like it is feral and about to scratch your eyes out.
This says it is a public link, but, it may not behttp://www.facebook.com/album.php?aid=17095&id=1012457594&l=f503b