First entity: Edible Dog.

Yes when I mean edible I mean edible. You can find Edible Dogs in Plains and Sunflower Plains biomes. You can recognize it by looking at it's tail. If tail is spinning like helicopter's propellers then it's Edible! Can be turned into steaks.

Second Entity: Edible Cat

Yes, again you can eat it. This mob spawns in same locations as Edible Dog, but its harder to recognize because it looks the same as normal cat, but who would spawn random cat in plains? Same as Dog can be turned into tasty steaks.

Third Entity: Edible Rock

Well it outstands from mods theme because rocks aren't alive right? Not in this mod! Edible Rocks spawn in bigger caves like dripstone and lush ones. But be careful, rocks will chase you after you hit them. They're also really loud so when you hear too much cave noises then you're close.(Their taste blows your mind)

Last entity: Edible Villager

Just villager, but you can eat it but please don't do that!

The Edible Leaves

Alternative food source, made using smelting leaves in furnace, can be used to make vegan meat

The vegan meat!!!!!

You can now craft an vegan meat(that gives you really cool effect btw) using leaves and meat.

The Vegan Villagers

Give a villager vegan block and it will turn vegan, selling to you vegan things :]

The Vegan Stew

Obtainable only by vegan villagers