i like the gesture of the cat, and the contrast between his mouth and his dark fur, i wish i could see the rest of his tail though, also a little bit more contrast between his torso and the background. Good one though.
I like the tight cropping here, it keeps the object of his/her stare out of view. You certainly captured the feel of the moment on this. Could be a little lighter perhaps. Its obviously not level, but that makes it more dynamic in this case as if the photographer is caught off balance as well as the cat.
Welcome to Caedes YingYing.
You have captured this cat's alert mood very well and the picture keeps one wondering what it is looking at.
It has been suggested a little more contrast - I rather like the way it melts into the background :)