Unou or Unau: How To spell?

The word Unou is misspelled against Unau, a noun meaning "The two-toed sloth (Cholopus didactylus), native of South America. It is about two feet long. Its color is a uniform grayish brown, sometimes with a reddish tint."

Word ends with consecutive vowels 'AU' preceded by alphabets 'un' is misspelled as 'OU'
Wrong Spelling:  un-ou 
Correct Spelling:  un-au 
Check more misspelled words of Unau to spell it correct.

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