Here's why:
* Domain Eukarya includes all organisms that have eukaryotic cells. These cells are characterized by having a membrane-bound nucleus that contains their genetic material (DNA).
* Animals are multicellular organisms with eukaryotic cells. They are heterotrophic, meaning they obtain nutrition by consuming other organisms.
* Other domains include Bacteria and Archaea, which are both prokaryotic (meaning their cells lack a nucleus).
Let me know if you have any more questions!