The word for "black bear" is one of many Wiyot words that can be pronounced with either an initial "m" OR an initial "v", with no change in meaning (see "m" words and "v" words for more examples).
The Wiyot words for louse/lice, snow/hail, and deerskin are all pronounced hiqh (they are homonyms = words with different meanings but the same pronunciation, like English "pair" & "pear").