Creepy warning, this question is not for the light-hearted

This morning I was making breakfast while I spotted our cat eating something in the garden. A better look showed he caught a rabbit.

The cat is now very happy and satisfied, leaving me concerned about a half eaten rabbit in the garden.

Any chances that he will return and finish the meal?

What should I do? I'd prefer my partner not to see the horror scene in our garden when she gets back from work this evening.

Should I remove the half animal? how can I dispose of it? thanks