Table 2.

Different classification of microbiome: the microbiome can be classified according to their type, distribution, and their effect on the animal/human health.

Classification of microbiota according to:
Type	Distribution	Role
1. Bacteria	• External microbiota (on the outer skin)	a.1. Beneficial microbiota (e.g., SCFA and vitamin producing bacteria/probiotics)
2. Archaea	• Internal microbiota ➢ Gut microbiota ➢ Oral microbiota ➢ Naris microbiota ➢ Vaginal microbiota ➢ Milk microbiota
3. Fungi		2. Pathogenic microbiota (e.g., cancer and metabolic syndrome inducing bacteria)
4. Protozoa
5. Viruses (virome) ➢ Plant-derived viruses ➢ Giant viruses ➢ Bacteriophages