I am thinking about getting goats to help clear our land. While I see the normal brush and small trees, a few brambles we also have lots of Bracken fern. Now I have concerns about my plan since I have learned that bracken are poisonous in all parts of the plant and that this causes the development of bladder, stomach and other cancers. The toxin deposits in milk and meat of omnivores and can be passed to consumers. I was researching the allopathic effects of bracken on surrounding plants when I came across this. Am I making too much of this or should I consider other ideas for clearing some of the woods?