The Zuna are a social humanoid species. There are many different cultures within this species, the Tosi and the Selupa being among the best known.
Average height: Adult females: 175cm to 183cm; Adult males: 172cm to 176cm
Average weight: Adult females: 74kg to 79kg; Adult males: 61kg to 68kg
Average lifespan: Females: 87 years; Males: 83 years (max. recorded 118 years)
Skin: Skin color is usually a medium beige or a light tan. Darker skin tones are found closer to the equator and paler tones to the north. The Selupa tend to have paler skin, while the Tosi, for example, have more beige or tan skin. There are camouflage patterns along the sides of the neck, torso, hips, and legs. Usually these spots are a darker tone than the rest of the skin.
Hair: Hair color ranges from red to blond to dark brown or black. Hair consistency is usually fairy thick, somewhat course, and grows quickly, so the hair may become very long before the strands naturally break off.
Eyes: Eyes may be blue, grey, black, green, purple, yellow, brown, or hazel. Males tend to have larger eyes in proportion to their face than females. Zuna have very high tolerance for the ultraviolet rays of the sun and can see well in light than other species would find blinding. This is perhaps due to the fact that the Zuna evolved in deserts.
Neurology: The Zuna brain is very resilient. It can withstand up to 15 minutes without oxygen without sustaining damage. Most Zuna have no problem holding their breath for 7-8 minutes, thus making them excellent in underwater activities.
Gestation and Endocrine System:
Gestation lasts eight months. Zuna babies’ heads are comparatively smaller, so birth is not as painful for Zuna women as it is for humans. This also means fewer deaths resulting from birth complications, both for mother and offspring.
Zuna have high sexual dimorphism. The females are considerably stronger and taller than the males, and also have proportionally longer limbs and more musculature. This has made them the physically and biologically dominant sex. Most Zuna are fairly well muscled, however, though this of course depends on their lifestyle and personal health, though musculature developes more readily and easily in Zuna than in humans or other species. Females develop muscle earlier in life and to a greater extent than in males. Puberty is on average reached by age 14 in females and 15 in males. Females are most fertile between the ages of 19 and 35. Menopause usually occurs around age 55 or 60. Children can be borne without increased risk until this time.
The menstrual period of the female Zuna has a 42-day cycle, each period enduring for approximately 7 days. Since the Zuna evolved in a desert climate, the amount of blood released with each period is comparatively small, so that not as much water is lost from the body.