When rabbits are hunted down by foxes or cats, they do not display a fleeing behaviour which causes them to be easily killed. They only display a panicking behaviour when hit by the fox/rabbit which happens to the rabbit when taking any sort of damage. This contradicts the behaviour that rabbits have with other hostile mobs, untamed wolves and players (in survival mode) where they flee.

The panic behavior and fleeing behavior are 2 different things. When the rabbit flees, it tries to escape in the opposite direction from the mob. When it panics it, runs in random directions like any other passive mob would do when attacked.

Also killer bunnies do not attack cats & foxes naturally like they do when wolves and players are nearby.
Expected behaviour

The rabbit would flee from its cats and foxes like it does to wolves, players and most hostile mobs.

Actual behaviour

The rabbit did not have any fleeing behavior towards foxes and cats in any shape or form. Even though they hunt down rabbits like wolves do.

Steps to Reproduce:

 1. Spawn a group of rabbits anywhere in the world.

 2. Spawn a fox or a cat close to the rabbit

 3. Observe the behavior of the rabbits