FAUNAS is a playable word

fauna Scrabble® Dictionary

noun
pl. faunas or faunae
the animal life of a particular region
(adjective) faunal (adverb) faunally
29 Playable Words can be made from "FAUNAS"
   2-Letter Words (8 found)
   3-Letter Words (10 found)
   4-Letter Words (6 found)
   5-Letter Words (4 found)
   6-Letter Words (1 found)