What a splendid capture! The detail in the abdomen is really crisp. I feel it could benefit from a tiny bit of brightness reduction, but it's an excellent photo and a good capture of a candid moment. He does seem to be threatening, doesn't he?
Love it! Great detail...I agree with regmar, it is a bit bright. If the brightnes was reduced a tad, I think it would bring out even more detail. Wonderful photo!