We have alot of problems with acorns here too. You will see an animal go through the sale and know it has been in acorns. The tannins are toxic to cattle, and it seems that there are some breeds that are more affected by it. I think we have lost one or 2 over the years. They get moved out of any areas with alot of oak trees until after a couple of freezes.
One reason that it might not be such a big problem for you greybeard, is all the hogs down there. The cattle are probably not getting a toxic amount with the hogs foraging for the acorns. And acorn fed pork is very tasty. Old timers here in the mountains used to run their hogs in the oak forests to glean the acorns for free feed for the hogs and to give it that sweeter taste.
We don't have open range like out west, but there have been more than one case of the cattle getting out and grazing the sides of the roads. Also the cotton pickin deer along the sides of the roads. Have seen 3 deer hit in the last week here. Bucks are coming in rut, does in heat, they are traveling and not looking before they cross the road. Had one run out in front of me and I hit it; not going very fast, it rolled across the road, into the ditch, jumped up and ran off. At least it didn't tear up my truck this time.