Just as trouble says but watch the boiling time, never done a Muntjac so can't be sure but know that an hour can be a bit to long for a Roe.
And don't use bleach, get some hydrogen peroxide to whiten the skull, bleach will whiten the bone and seem OK but a couple of months down the road you will find the skull starting to crumble, bleach turns the bone like chalk not immediately but after a while.