It depends on what you mean. If you mean types of viruses, there are:
Virii,
Trojans,
and worms.
Certain poos
Viruses can be classified based on their structure (DNA or RNA, enveloped or non-enveloped) and their method of replication (lytic or lysogenic life cycles).
Based on host specificity: viruses can be classified as either specific to a single host species or able to infect a range of hosts. According to the type of nucleic acid they contain: viruses can have DNA or RNA genomes. By their shape: viruses can be labeled as either helical, icosahedral, or complex. According to their mode of transmission: viruses can be classified as either airborne, foodborne, or bloodborne.
Viruses can be classified based on their genetic material (DNA or RNA), their morphology (shape and structure), their host range (types of organisms they infect), and their mode of transmission (how they spread between hosts).
Viruses are not an organism at all. They are not alive.
Bacteria are not classified by the number of chromosomes, or the type of mitochondria.
Chicken pox is classified as a virus and viruses are not living things, so they are not classified as cells.
How are elements classified
viruses, bacteria, algae, fungi, and protozoa
because they are not yet clearly classified
What are some ways the stars in the photo could be grouped or classified
they classified slaves by separating them they classified slaves by separating them