Mobs can rotate their heads too much

Summary:
Some mobs can rotate their heads 180 degrees in different directions, especially when looking at the player:
Polar Bear, Pig, Panda, Chicken, Wolf, Ocelot, Cat, Llama, Sea Turtle, Creeper, Enderman, Stray, Skeleton, Wither Skeleton, Zombie, Zombie Pigman, Husk, Drowned, Witch, Vindicator, Evoker, Villager, Zombie Villager.

Steps to Reproduce:

1. Spawn one of the above mobs
2. Move around, and watch the mobs head as it looks at you

Observed Results:
The mob can turn its head almost completely, which looks unnatural.

Expected Results:
Mobs should also turn their bodies, to look at the player.

Screenshots/Videos attached: Yes

Notes:

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Original Description:
Polar bear just looks weird when looking like this, does not happen in Java edition