When I was in veterinary school, the two drugs were nicotine sulfate, which was a paralytic agent and very, very sensitive as far as the dosage. And you could give a certain amount and nothing would be apparent, and you’d give another 25% over that and the animal die. So that was a very touchy drug to use. Another one that in use back in the ’60s was sescenal korine or socastrine, much the same story. One dose would be perfect, a little bit more would be fatal unless you had oxygen on hand and could keep them undergoing respiration until they recovered. Then in 1970, ’71, the M-99 started to come out and be available. And that really worked quite well for most hoofed animals. We used it on cats and bears.
