Click on the labels above image to see the steps of reconstruction.

 

Second animal was a really hard one. Notice on the previous pictures - half of its body was gone. I used the parts of the third one, nemoving the horns and changing the positioning of torso, neck and the head. It was only half way through. Using airbrush, dodging and burning techniques, I have managed to remove the damage.
The background (could be called the floor layer as well) I have did the similar way, as described in the Stage 1. Yes... I have said it was the most difficult one, and it's the shortest description...