The Rule of Thirds is used in the opposite way as most of the image is filled with the cat, though her face - the focus - is more to one side. The opposition is effective as the pattern of her fur creates a texture, which adds depth to a two dimensional image. The diagonal lines seen on the animal’s whiskers lead to her face, which as previously mentioned, is the focus. There is contrast between the green of her eye and the rather saturated tones of the rest of the image, and also between light and dark shades, which creates a sense of balance as the two are equal. There isn’t much of a background, with how the image is cropped.
This is a portrait of an animal.