You could balance the dogs colours on an adjustment layer and use the mask so that it only applies to the dog and leaves.

This one done very quickly with an adjustment levels layer.  Take center eye dropper and click on yellow shadow area on dog (by the left leg).   Fill the mask with black and paint in the dog and leaves in white. 
It could be done with a lot more subtlety on curves adjustment layer and spending more time on it.

And every one said, 'If we only live,
We too will go to sea in a Sieve,---
To the hills of the Chankly Bore!'
Far and few, far and few, Are the lands where the Jumblies live;
Their heads are green, and their hands are blue, And they went to sea in a Sieve.

Edward Lear
http://www.nonsenselit.org/Lear/ns/jumblies.html