I saw this Canadian documentary at a Seattle film festival in 1978. It had a scene in it so funny that they had to delay the next film for fifteen minutes until the laughter died down. And then they had to stop the film festival at least twice when people remembered the funny part and burst out laughing during serious films. It won't spoil it to tell you the scene because it has to be seen to be believed. It involves the vet wearing a rubber glove all the way up to his armpit trying to remove an intestinal blockage from a cow. The cow gets loose and gallops across the prairie with the vet as a reluctant trailing appendage. You can just imagine the insurance agent asking the vet, "Tell me again how you broke your arm in 14 places?"