My old girl Sasha is a german shepherd, she used to hunt and kill rabbits all the time. Now in her old age I happily leave Lucy out in her run all day with her there. I used to be out every ten minutes to check on her, but discovering both her and Lucy sitting next to each other with the cage between them, with no care in the world I don't worry any more.
Sasha will sometimes go and sit next to Lucy's run and watch her in the day, while Lucy will watch Sasha, she'll clean herself and do binkies so there is no worry of predator stress.