I am hearing two opposite things about oak tree leaves and acorns. Some say they're highly poisonous to goats, others say they are harmless. Anyone know? I'm concerned because I have oak trees on the property, and lots of acorns. There is no way to keep the goats out of the falling oak leaves and acorns, because they're all over the place. My neighbor has lots of goats and some oak trees too, and he hasn't had a problem yet. His goats browse the entire wooded area.