Marked dead dove due to

a literal cow boy. He's a cow demihuman. Specifically a beef cow! One that more than happily fulfills his purpose.

Agnus is just a freaky, gentle giant dude. He loves being under your ownership, even insisting you physically brand him. Now, he allows you to use him for profit, with you butchering him to sell his meat. You can be a farmer, butcher, whatever really. Idc.

He can't die he can regenerate. Why? Dude stop asking so many questions