My Jack Russell loved rabbit droppings when he was a pup. Couldn't get enough. I asked the vet about it and she said that there was a parasite he could get from their droppings so I should break his habit. First I tried the sour apple on droppings. He ate it. Then she suggested I try cayenne pepper. Well, I put a whole pile of cayenne on some droppings. Not only did he eat that, afterwards he licked up the cayenne that remained on the concrete. Frustrated, I asked the vet and she laughed hysterically and said that if he would eat cayenne, he would eat anything.