Debasis,
Nice to see this. I agree that opening up the shadows look fine. You can try lightroom. There are some tips in the tips section on processing using lightroom software. We should try to get it right in the camera and then do slight processing if required. I normally don't take more than a minute to resize and do minor corrections like slight opening up shadows, contrast work.

Did you shoot a vertical composition of this elephant? Thanks for sharing.
Cheers,
Sabyasachi