Our 1st Sheltie only ate cat poop. And we had some feral cats in the neighborhood that would always poop in our flower beds. One time Hollie ate it unknown to us and got pretty sick. Shelby on the other hand will eat any poop she can get her mouth on, including her own. We are always cleaning up after her to prevent her snacking habits, but unfortunately she is pretty good at hiding it for a sneaky snack. Especially in the fall when the leaves fall.