ursus arctos

NOUN
12 LETTERS · STARTS WITH U

ursus arctos is a valid 12-letter word worth 13 points in Scrabble and 16 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
U1R1S1U1S1A1R1C3T1O1S1
1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 3 + 1 + 1 + 1 =13 PTS
DOUBLE WORD → 26TRIPLE WORD → 39
MEANING

What does ursus arctos mean?