It might be lack of sleep (I'm a night shift nurse), but I had some other thoughts on this piece. The finish on it appears rough, but not just from age, but as if made that way? If so, probably not furniture. The open 'mouth' could be to hold a rope (banner? A sail rope?) or bannister if this item were flat/vertical against a wall? From my nautical interests, I even contemplated if this were a cat's head or some figurehead for a Thai prow! You see what sleep deprivation can produce!?
https://www.scottishmaritimemuseum.o...ark-cats-head/