Also depends on whether you consider fungi an animal of a plant. As their cell structure resembles more of animal cells than plant cells. And fungi are everywhere. Humans, animals and plants would all die if fungi would seize to exist. They are in our body, create our food and medicine, they are the cycle of life as they break down dead tissue, they feed plants and trees. The oldest living organism is a fungus. They are what keep us all alive, they are basically mother earth. And we eat that. Seeing The Last Of Us suddenly makes a lot of sense. Revenge of the fungi.