If you put a rabbit in a space where the ceiling is the size of 1 block and make them jump, they start to die.
MC-305494
Rabbits receive damage if they jump in a space with a ceiling of 1 block.
Open
1
(Unassigned)
1542202
Confirmed
Expansion A
Important
Mob behaviour
26.1 Snapshot 2
Retrieved
Can confirm leading the rabbit with a carrot in a solid 1 block space makes it take damage