The easiest way to replicate this is to place a rabbit on a 3 block pillar and wait for a bit, it will jump off and take fall damage. In a typical survival world rabbits will occasionally make enough jumps that cause fall damage that they just die.
MC-213488
Rabitts ocasionally make suicidal jumps
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Duplicate
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This appears to be a duplicate of MC-77732, which hasn't yet been resolved. If you have any additional information to provide regarding this issue, feel free to comment on the parent ticket. If you feel that this issue is affecting you, feel free to vote for the duplicated ticket, to give Mojang a basic idea of how many people are impacted by the problem. Just to further inform you, this will not determine how quickly the bug gets handled or fixed.