Twig,
great shape and wow, what an effect the spalt has caused.
From an American University web site I learned that there are many fungi that can create a multitude of colours in spalting, you can even order them on-line to spalt your own, but because its a fungi you can't import them to the UK, shame because I've only seen spalt like this in America before, stunning and lucky you to find something like it over here.
If you have any shavings left you might try getting some more to go.
Hippo?, Otter?, - I saw a Wombat first.