One that always blows my mind:
The elephant that Dumbo is loosely based off of, Jumbo, was once owned by the infamous PT Barnum. Jumbo was getting very ill due to all the random things it was eating (not elephant food) and the rumour is that the price to get them fixed was so high that Jumbo was "accidentally" left on the train tracks when they were packing up to move cities and got hit by a train car killing them instantly.
While PT Barnum always claimed innocence it would not surprise me if it went otherwise.
This part isn't proven or anything but just a feeling of mine. But since I have discovered this and watched it again, Mr. Vandevere from the Live-action Dumbo gives me such PT Barnum vibes...
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