I tend to forget to post a question when I've won. Probably because I really dislike trying to come up with stumpers....

I was reading online a translation of the Fianaigecht, and they were very specific in their descriptions of what Finn wore to go into battle. Out of everything he put on, including his weapons and shield, only one thing he put on specified that it was decorated with animals. What item was it, and what was the animal?