i think thestory means you've got your subject centered in the frame completely in almost all of these, explore the rule of thirds or at least become aware of it, and consider it in your composition. its not that there is anything WRONG with centering a subject, its just that there are better alternatives at times.
they are all in focus, animals are exposed pretty well.
i would try going wider showing more, or eliminate more from the background so that you can better isolate the animals. as of now i think your backgrounds don't add to the photographs. with a simple plain background or patterned one you can pull the animal out of the photograph even more, or move out showing more of the cluttered environment and find good composition and you can show the animal AND its environment.
but i don't think they work well as they are, the first is my favorite.