For reference, here's the scientific definition of "animal" - which is broad enough to include insects and various microorganisms as well as humans and other ma

For reference, here's the scientific definition of "animal" - which is broad enough to include insects and various microorganisms as well as humans and other mammals: > Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, have myocytes and are able to move, can reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development. As of 2022, 2.16 million living animal species have been described — of which around 1.05 million are insects, over 85,000 are molluscs, and around 65,000 are vertebrates. It has been estimated there are around 7.77 million animal species. Animals range in length from 8.5 micrometres (0.00033 in) to 33.6 metres (110 ft). https://en.wikipedia.org/wiki/Animal https://en.wikipedia.org/wiki/Animal (Fish are in the category of vertebrates.)