Ship's figurehead of carved oak. The terminal is an animal head in the round, with gaping beak-like jaws and prominent teeth and eyes. Viking Ships Prow is in the British Museum
Ship Figurehead from the Oseberg Ship approx 800AD
They were their owners’ proudest possession, an essential part of a life of a Viking, and considered a treasure. Craftsmen decorated these ships with elegant elaborate head pieces. One of the most outstanding might be its figurehead. Often, the front of the ship was decorated with a carving of an animal head, perhaps a dragon or a snake, and designed to frighten the spirits of the land the Vikings were raiding. These carvings were put up when the ship was sailing in to land.
Viking Carving
Wood carvings on Urnes Church 1100AD
20th Century American wood carving inspired by or based on the Urnes Church carvings
Other things to look at
Viking Jewellery / Torcs (type of Jewellery Necklace
http://www.urweg.com/viking-celtic-torcs-neckrings.html
Also look up concept of Ouroboros
https://en.wikipedia.org/wiki/Ouroboros