I really like the first shot, great compostion and the look on the Kittys face is fantastic.
As for the 2nd...... I see what you are trying, the cat looking into the distance, but if it wasn't for the 1st image I dnt think I would have had a clue?? The cat is barely recognizable, just a ball of fluff. It may work as part of series but it's lacking on it's own.
Also the moon is getting obscured by the branch, the sky is a little dull (compared to the previous) and the tree tops at the bottom are distracting the eye.
Sorry dont mean to go on but I think it is important to see why the top image is so much stronger than the bottom one.