whiptail lizard

NOUN
15 LETTERS · STARTS WITH W

whiptail lizard is a valid 15-letter word worth 32 points in Scrabble and 34 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
W4H4I1P3T1A1I1L1L1I1Z10A1R1D2
4 + 4 + 1 + 3 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 10 + 1 + 1 + 2 =32 PTS
DOUBLE WORD → 64TRIPLE WORD → 96
MEANING

What does whiptail lizard mean?