while I understand and am all for the use of the bump map I think that there is still a lot of "detail" that can be fixed or added on the model.
For example
Look at how the trunk comes off of the face and how it kind of overlaps the mouth.
Also notice how much detail the mouth has, where as on your model it is fairly blocky
The ears seem way to flat, perfectly flat. Like a human ear, and elephants has man thickness variations throughout. I assume you are going to rig/move the ears, otherwise why not add some flimsy-ness to them? Also the feet lack detail. I don't think a bump would do much good for adding such large detail.



How defined are the leg joints on your model? Because like most animals an elephants legs should not be perfectly straight.

Cheers.