I also think that in this case may be wooden dowels. I did this one, and I did it with structure, with a threaded metal rod, bending. The top of the head is cake, on a thin board, and below the mouth is RKT, or may also be carved polystyrene. It is similar to you see on tutorial that Goreti sent you. I regret not having photos of the intermediate steps, and sorry for my English, which is not very good. I hope I’ve helped and you get it.