Onion Otter

Ok so I've done characters-as-sigil-animals

But it's no fun with the characters who aren't represented by animals/don't have sigils.

So I thought if Davos were to be represented by an animal he would be a common-looking, water-loving mammal.
My first thought was a water vole but they live around fresh water not sea water...

So otter it is

(I've clearly thought too much about this)