I recently started a small herd of 5 dairy goats and 2 pygmies. Since the end of summer I have had to perfectly healthy look does die. One of the minilamanchas and my favorite, Brownie , the little pygmy doeling. I found out 2 days ago , thanks to the internet, what was going on. I have a poisonous plant all over my land. It is called Perilla mint. The reason it does its damage in late summer and early fall is because the goats will browse on everything else first and then go for it last. Here is the reason I am posting this. I learned this from my country extension agent. This is a free service. Mr. Carter came out, walked my property and identified one definite killer foliage and 2 other potentially bad one. There was a third , he wasn't sure of so he took a sample for analysis. Again, this was a free service. I would strongly suggest that anyone thinking of bringing livestock to their land take advantage of this service , before you get the animals. The agent told me that the reason I still have goats left is probably because I provide them goat chow every day and hay. So they weren't foraging because of hunger , more because of instinct.