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Animals are almost the same as human in energy transformations. They change food into thermal and mechanical energy. Due to this constant temperature is maintained in a body and animals are able to move.
1 Heterotrophic, which means they have to get their own food. 2  Plants are autotrophic because they make their own food through photosynthesis. 3  Because they cannot make their own food, members of the Animalia Kingdom must ingest, or eat, other organisms.4  Eukaryotes: this is the type of cells animals have. Eukaryotes: this is the type of cells animals have. 2  Eukaryote cells are more complex than the simpler prokaryote cells found in bacteria. 3  No cell wall: plants, fungi and prokaryote cells have a cell wall, which is a rigid outer layer that gives cells structure. 4  Animal cells do not have this structure.