You saw grandpa Don, now get ready for-

Figured I also draw him younger, or rather two possible variants of how he might've looked like in a younger stadium.
And yes, that is how he looks under the beard/mane. :S
There are just a few little differences to how he looks currently. That his fur reached all the way to his forehead is rather speculative, I wouldn't consider it canon, just wanted to see how that looks. xD A little experimentation.
His brown fur was darker, he had less wrinkles in hs face and his horns and beak nose were smoother and more shiny. Nose might also be a little narrower.

It's fun to experiment with his design, somehow I get so many ideas.