I have not found many predators for these leathers. I have 1 huge cabbage I have to give away to anyone local as it takes up way too much space and I already have one getting too big that a tiny bit had stuck to a rock and is now a nice size piece! My Steve Tyree toadstool has been fragged several times and it is getting to where I need to do it again but I still have frags left from the last time! So me and leathers well, what can I say, they grow like wild fire.