I have researched this for months. All I found was Australia Sheep, and that can get confiscated on the way in.
I read ONE story of a doc treating a woman with Too Much thyroid- her hubby was raising and butchering own chickens and he accidentally ground up the glands with other meat.
That's my kind of accident, lol. My neighbors raise a LOT of chickens, heck, we even have chicken thieves in our town !
Not me, of course. I do love ground chicken burgers tho...