Unique Species Part 1: 3 Pictures I like & what tools were used

For this combination, I think they used texture for the head to match the body. I think they used the dodge tool in the background to make it lighter. 

I think they used the dodge and burn tools to help get everything the same color and to make it look more realistic.

I think that they used the paint bucket tool to add the green on the nose. I also think that they used dodge and burn on the green parts on the nose to try to get the same color as the body.