I've noticed that several images, especially with a lot of white, look red or pinkish on this forum. I'm wondering if it isn't the green color scheme messing with our perception a bit or making things seem even redder than they are.

That said, I pulled the first one into CS4 and there is a bit of a red cast. I can repost the results if you like, but this is what I did:

Open in CS4.
Duplicate background layer. Then FILTER>Blur>Average.
Added Levels Adjustment layer to the now solid color. Picked the gray eyedropper and clicked on the color to turn it gray.

Turned off visibility of the blurred layer and adjusted the opacity of the Levels Layer to what is my best guess on how the image should look having not seen the dog myself. I settled on 49%.