4 Pics 1 Word Puzzles

What is the 1 word (6 letters) answer to the puzzle below? Scroll down to see the answer!

4 Pics 1 Word Answer 6 letters for mouth wide open with teeth bared, monkey on branch, primate sitting on pole with other primates, gorilla walking through field on all fours

Mouth, Monkey, Primate, Gorilla

The Answer is: