As big as a human hand. It had to be a fawn / teenager, but it failed. I don't know if it's a male or a female... Hm. It has a female anatomy but I wanted it to be a male. It'll be a herma, ma
Only reason skull is see-through in sketch is only to show how his muzzle fits inside of it.
He has long black human hair
Also his skull is attached to his head as if it where another part of him.