A look at the Necromancy Magic Ability in Ultima Online and how it works on pets.
Per publish 100 notes:
Pet AI: Necromancy/Necromage no longer casts Corpse Skin if pet’s damage type is physical or cold.
As most animals who have or can train Necromancy/Necromage are split spec I inquired to Bleak on how this works.
Per Bleak, if a split damage type animal has a majority Physical or Cold damage type, they will no longer cast Corpse Skin.
What about if an animal was tied Physical and something else. Then that animal would not cast corpse skin, Physical damage takes priority.