Curiously enough, "Mister Ed's" real name was Bamboo Harvester and he died a somewhat untimely death in 1970 from kidney disease. A different horse, thought to be Mister Ed died it 1979 but it was not the real Bamboo Harvester.
GETTING MISTER ED TO TALK: (Wikipedia) It is often said the crew was able to get Mister Ed to move his mouth by applying peanut butter to his gums in order for him to try to remove it by moving his lips. However, Alan Young said in 2004 that he had started the story himself. In another interview, Young said, "Al Simon and Arthur Lubin, the producers, suggested we keep the method a secret because they thought kids would be disappointed if they found out the technical details of how it was done, so I made up the peanut butter story, and everyone bought it. It was initially done by putting a piece of nylon thread in his mouth. But Ed actually learned to move his lips on cue when the trainer touched his hoof. In fact, he soon learned to do it when I stopped talking during a scene! Ed was very smart."
Young also states in the AAT interview that after the first season, Ed did not need the nylon – Alan and trainer Les were out riding one day and Les started laughing, telling Alan to look at Ed, who was moving his lips every time they stopped talking, as if attempting to join in the conversation. This difference is visible when comparing first season episodes to later ones, as it is clear that early on he is working the irritating string out, sometimes working his tongue in the attempt too, and later on he tends to only move his upper lip, and appears to watch Alan Young closely, waiting for him to finish his lines before twitching his lip.
Young added in the Archive interview that Ed saw the trainer as the disciplinarian, or father figure, and when scolded for missing a cue, would go to Alan for comfort, like a mother figure, which Les said was a good thing.
It's been a few years since the show was produced (from 1961-1966) but it is still on cable; still pretty funny if you ask me.
"Mr. Ed., I toast you with a raised bowl of oats."