I'll start by saying that I love this
You do expressions really well, and it is clearly seen that Puma is worried about the orange tabby. I really enjoy the style of the faces and the paws and the snow in this picture looks so soft.
The orange tabby's tail looks a bit awkward and so does Puma's fornt leg. I would also think Puma's tail and leg should hang down instead of looking so tense, but how you did them were nice.
The backround is rather bland but thats understandable during a snow storm. The grass just looks out of place, Maybe adding some shading under the grass would make it look as if it was just floating around. All in all great work