All of the following mobs (cows, sheep, pigs, chickens, and mooshrooms) don't stop running away after being hit.

What I expected to happen was...
After a few seconds, the animals would stop fleeing.

What actually happened was...
Even after long periods of time, they're still running.

Steps to Reproduce:
1. Find (or spawn) any of the aforementioned animals.
2. Hit them.