With the overall image set at it's, as you say, "proper exposure", brighten the shadows in your image processing software. In Lightroom, that would be Shadows. That would raise ALL of the darker areas in your image. Or, in Lightroom, use the adjustment brush set for Shadows, raise the exposure of the shadow slider but click only on the bear. In either case, the brighter parts of the image remain the same while all the darker areas or just the bear get more exposure, and now show the detail you want. Hit the print button. Done