When I deal no damage (throwing egg, snowball, ender pearl) at a pig, cow, or any passive mob, they flash red and run away as if they were dealt damage.

I think that if you hit a passive mob, they shouldn't flash red or run away.

Here's the video links: https://youtu.be/2BtxYl2gJFY

https://youtu.be/ljWtbREv1G8