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That looks great. You could lighten the wolf a bit (mostly the head), especially the light areas in the fur, this will add some nice contrast and separate the Wolf from the BG. Good job!
He looks great, although I liked the darker BG on the first version you posted in #21. You could still lighten the 'lighter/whiter' fur areas on his neck, just the white fur, not the other. Do this with your Brush Tool on the layer mask of the adjustment layer your using to lighten with.