The bacteria kingdom, the protists kingdom, the plant kingdom, and the fungi (fungus) kingdom make their own food. While us (Animalia) don't.
plants
Sponges
Living things capable of processing their own food are called Autotrophs. They are living things which contain chlorophyll. So, plants are the only autotrophs.
Autotrophs.
Autotroph
When living things cannot make their own dinner, it is called, "Going out to eat!", or , "Making reservations!"
All animals eat other living things, either plants or other animals. The only living things that make their own food are plants.
producer
Autotroph!
"Consumer" is the biological term for life that derives its energy from other living things.
All living things depend on green plants for food because they are producers. They are the only organisms that are able to make their own food.
All members of the Protista Kingdom make their own food or feed on other living things. All protists are eukaryotic, and most are unicellular.