An animal cell vacuole is a small sac located in the cytoplasm of an animal cell. Vacuoles in animal cells act as storage pockets, storing nutrients or waste products.
Vacuoles are found in animal cells but are far more common, and considerably larger, in plant cells. They consist of water and amino acids, with an enclosing lipid membrane that prevents the cytoplasm from passing into the vacuoles. The vast majority of animal cells have small vacuoles that store food and nutrients and, in some cases, store and quarantine waste products to prevent contamination to the rest of the cell. Simple cells and prokaryotic cells do not generally have vacuoles.