Attacking skeletons, creepers, zombies, or wild wolves will not make them hostile, although it should.

What I expected to happen was...:
When I attack a wolf, skeleton, zombie or creeper, they will become hostile.

What actually happened was...:
When I attack a skeleton, creeper, zombie, or wolf, they will act as if nothing happened/ stay neutral.

Steps to Reproduce:
1. Spawn/ find a non-tamed wolf, skeleton, zombie, or creeper in creative mode.
2. Attack them using anything.
3. They will not become hostile