Klingons are humanoid in appearance that stand on average at 1.6 to 1.9 meters in height.
Klingons typically sport long manes of luxuriant hair, and males, moustaches, and beards.
Their hair is usually braided or worn loose and is black or dark brown in color, although it turns gray or white with age.
They also tend to have a skin tone that ranges from a swarthy olive to brown.
Perhaps their most prominent external feature is their ridged forehead.
These intricate, bony patterns, which are also visible on their feet, vary by family line and are an 'evolutionary' remnant of their prehistoric crustacean forms, when Klingons had a more extensive exoskeleton. Most body functions incorporate
multiple redundancies, such as redundant stomachs, lungs, livers, an eight-chambered heart, twenty-three ribs and three testicles..
This characteristic is known as "brak'lul" and makes Klingons incredibly resilient.
Klingon ribs are arranged in a honeycomb; the structure might be compared to chain mail.
The Klingon expected life span is at least 150 years Klingon mating rituals involve limited domination and combative attitudes.
Par'machpu' are chosen mates for dedicated recreational sexual congress, equivalent to fiancées among Terran humans.
Klingon females reportedly search for their own partners, whom they deem worthy of copulation.
Normally this has to be a male of great strength, valour and at least possess great courage. The mating process can be a very wild and sometimes violent affair. Klingon pregnancies run 30 weeks. The Process of giving birth can sometimes take days. Interbreeding is possible with Betazoids , humans , Romulans and and Trill Thus they are all the same biological species.
Klingon traits remain dominant over several generations.
Klingon physiology also included a symmetrical organ called the QiVon.
The Klingon High Council attempted to to adapt this genetic engineering to augment their own species.
The Klingons gained access to the genetic material of the human Augments, and wanted to adapt this genetic engineering to augment their own species.
The experiment did not work correctly; at first, subjects did gain increased strength and intelligence, but their nervous systems could not handle the strain and they died.
One of the test subjects had a virulent flu, which — combined with the genetic changes wrought by the experiment — became a deadly, airborne plague that spread rampantly across the Empire, from world to world, causing the physical changes to change them into the
terran-looking Klingons. A cure was formulated by Dr. Phlox of the Enterprise NX-01, however not before millions of Klingons were physically altered.
And owing to the genetic nature of the virus, these alterations were passed to succeeding generations of offspring.
We believe that Section 31 was somehow involved in the transformation of the Klingons.
Dr Phlox indicated that "someday" the physical alterations could be reversed.
He was right the Klingon's found the cure to the physical alterations.
In their history the Klingons experimented with genetic modification to further enhance themselves on several occasions, this resulted in several distinct groups of Klingons, most notably the QuchHa' which were created in the 22nd century and represented a significant proportion of the Klingon population until the late 23rd century.
Other genetically modified variants of the species included the Chalchaj 'qmey and the M'tachtar.
Another possible derivative group of Klingons were the Othans.
Weaknesses and Medical Conditions:
Klingons have a much reduced tolerance of cold temperatures.
For Klingons, arsenic was a necessary part of the Klingon diet instead of the deadly poison that it was to humans. Arsenic deficiency could in fact lead to a number of health problems for Klingons.
- Ba'ltmasor Syndrome
- Ka'Hat plague
- Klingon augment virus
- T'Viad's syndrome