I totally agree Jean. It's one thing to give dogs medicine or even painkillers. And I can certainly see why people would want to explore anything that might be beneficial for their pets. But it's a fact that marijuana is a psychedelic drug. Not all painkillers will give animals a mental state change but marijuana certainly would.
When I had Rocket neutered recently, he had double retained testicles. They searched and searched for the second one and found not a sign of even the cord of the second one. Because he had an abdominal incision, and they had searched for over an hour and 15 minutes for the second testicle, he definitely was on painkillers. However by the start of third day, it was obvious to me that they were making him dazed and confused. To me I knew that whatever little pain He would have by then was probably preferable to him being dazed. I took him off and he acted much better. In fact, he didn't really act much different than his normal self. A little quieter. I definitely made him rest of course. But after watching that I don't know how anybody would want to purposely put their dog into that sort of state.