i will say this that it is less about being able to write the perspective and more about having fun with it. Just to show a possible way to write it is a battle of instincts of do I eat the prey or protect them. Another thing to write could be that its a rare thing that if you go protect you could be eaten or eat other preds and as a thank you you have the hot little prey bouncing on your cock while you Digest your own personal prey.
PS I am not a writer or am good at writing stories because you ask me to hand write it and it disappears you asked me to type it it will also disappear from my head very quickly.