Biological weapon

Biological warfare —also known as germ warfare—is the use of biological toxins or infectious agents such as bacteria, viruses, and fungi with the intent to kill or incapacitate humans, animals or plants as an act of war.

While almost all technological societies know about biological weapons. Only a few known societies have developed and keep developing biologoical weapons.

There are species / societieds where Bio agents are the only weapon technology.

Such as the Psi Spores of the Piostla

Noteable societies with Biological weapon programs and developments:

Kermac

Freons (extinct)

Ferons (extinct)

Oncolo Federation ( disolved)

Kathka Orgh

Union ( Union science in general still pursues research into Biological weapons and Bio attack defense)

Terrans (are obsessed by Bio weapons) See also Gaja's Sword

Shail among the best bio chemists

Mini Terrans  share this obsession with their full sized cousins

It should be noted that Biological weapons are universally considered amoral. Biological weapons remain part of the United Stars (Union) arsenal and weapon development programs, but their use are (Admiral level authorized weapons) and weapons designed to exterminate entire populations, life forms etc are Assembly Authorized Weapons.

These weapons are under the Auspice of the Union Space Force