* Multicelled: This is true. Animals are multicellular organisms, meaning they are made up of many cells working together.
* Heterotrophs: This is also true. Animals obtain their energy by consuming other organisms, making them heterotrophs.
* Unwalled cells: This is partially true. Animal cells lack rigid cell walls like those found in plants and fungi. However, they do have cell membranes that enclose their cells.
Therefore, while animals are multicelled heterotrophs with unwalled cells, it's important to clarify that they do have cell membranes.