Sigh

Sigh mod adds a unique behavioral feature to Minecraft - mobs start sighing and shaking their heads in disapproval when you kill their companions.

The reaction only occurs among mobs of the same type. For example, a chicken will remain completely indifferent to a cow's death, but if you kill a zombie right in front of another zombie, the latter will clearly express its disappointment.

Currently, the mod only supports standard vanilla mobs. Mobs created using GeckoLib don't have this feature yet, but support for them is planned in future updates.

Important: this is a fully client-side mod that doesn't affect the server part of the game.