A few possible explanations:
He's not of this world. He's a ghost. He's hoping to get a part in a remake of the 1990 movie GHOST.
His momma gave him a bath and she scrubbed too hard.
He's In costume. Getting ready for Halloween a little early.
He may like to work in a circus or zoo one day.
He's a holdover from "Lord of the Rings."
He couldn't decide on what shade of brown to be, so he just opted for white.
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Mandy Hale has some advice for the white moose: "So you're a little weird? Work it! A little different? OWN it! Better to be a nerd than one of the herd"
Exactly.