Thank you, everyone, for writing in to offer tips on how to give the COW a pill.
We only lost one round on Day 4, but regained our "seat" of success in the afternoon that.
The carrier trick still works. He's such a pussy-cat when we put him into the carrier, and he takes his pills, after a few efforts!
Yesterday, he was almost in a most sorry state when he did not come in for breakfast with the rest, but sat in the living room, looking really forlorn. Poor Cow....