my ferrets have never been feed rabbit dry food and lambs liver they kill but never lay up they come back when called they way i look at it is if they have never been feed rabbit they dont look on it as food .but just dry food promotes tarter and gum decise ,rootton teath one of my jills is 7years old her teath are covered with tarter and one is rotton the vet quouted £120 to clean them and £30 to take one out