Humans and other mammals, however, can synthesize only half of them.

Humans ( older than 18 months ) and other great apes, bottlenose dolphins, pigeons, and elephants have all been observed to pass this test.

Humans and the great apes display the menstrual cycle, whereas most other mammals are subject to an estrous cycle.

Humans are the dominant race, but other sentient beings abound.

Humans are dependent on parental help for a large portion of their lifespans comparative to other mammals.

Humans and other mammals have a dietary requirement for certain essential fatty acids, such as linoleic acid ( an omega-6 fatty acid ) and alpha-linolenic acid ( an omega-3 fatty acid ) because they cannot be synthesized from simple precursors in the diet.

They know nothing of other intelligent beings in the universe until first encountering Humans and Pierson's Puppeteers in Fleet of Worlds.

* TMS-SD provides public outreach events to classrooms, libraries, museums and other organizations throughout the Southern California region with seven different multimedia programs: " Invasion from Earth-The Robotic Exploration of Mars "; " Mars Exploration Rovers-Year 4 "; " Mars on Earth-The Adventures of Space Pioneers in the Utah Desert "; " Mars on Earth-The Adventures of Space Pioneers in the Canadian Arctic: " Humans to Mars-How We'll Get There "; " A Close Look at Mars "; and " Mars in the Movies "

Humans are subject to nitrate toxicity, with infants being especially vulnerable to methemoglobinemia due to nitrate metabolizing triglycerides present at higher concentrations than at other stages of development.

Humans and other animals have amylases, so they can digest starches.

Humans and many other animals lack an enzyme to break the beta-linkages, so they do not digest cellulose.

Humans can become seriously ill from eating oysters and other shellfish contaminated with red tide toxin.

Humans leap from one leg to the other while running.

In 2161, Humans, along with Vulcans and several other species, founded the United Federation of Planets, which continued this wary peace.

" Humans and other animals: sociology's moral and intellectual challenge ", International Journal of Sociology and Social Policy, Volume 23, Issue 3, pp. 4 – 25.

Thus, Humans were divided into linguistic groups, and unable to understand each other.

Humans and other higher primates such as chimpanzees, along with horses, usually have a single completely fused uterus, although in some individuals the uteri may not have completely fused.

Humans and other animals have developed senses that enable them to evaluate the potability of water by avoiding water that is too salty or putrid.

Humans can also spread the bacteria to other humans through sneezing, coughing, or direct contact with infected tissue.

Humans have developed many specialized methods for laundering, ranging from early methods of pounding clothes against rocks in running streams, to the latest in electronic washing machines and dry cleaning ( dissolving dirt in solvents other than water ).

< http :// www. theglaringfacts. com / erich-fromm-humanistic-psychoanalysis />.</ ref > Humans can destroy through malignant aggression, or killing for reasons other than survival, but they can also create and care about their creations.

** On the other hand, in the Crusade episode Visitors From Down the Street, Captain Matthew Gideon would launch a full spread of modified probes ( uploaded with considerable information about Earth and other Interstellar Alliance worlds, and about certain recent events which had transpired aboard the EAS Excalibur ) at a pre-hyperspace planet where Humans had been cast ( by the local government ) in a role reminiscent of the Grey Aliens in our culture, in order to expose the locals to the truth.

Humans have three different types of cones ( trichromatic vision ) while most other mammals lack cones with red sensitive pigment and therefore have poorer ( dichromatic ) color vision.

Humans, as well as some other organisms, can have a chromosomal arrangement that is contrary to their phenotypic sex, that is, XX males or XY females.

Gamma World player characters include unmutated humans ( referred to as " Pure Strain Humans " in most editions ), mutated humans, sentient animals or plants, and androids.

Humans often build " houses " for domestic or wild animals, often resembling smaller versions of human domiciles.

Humans with natural eye lenses removed, as well as many animals with eyes that do not require lenses ( such as insects and shrimp ) are able to directly detect ultraviolet visually, by quantum photon-absorption mechanisms, in much the same chemical way that normal humans detect visible light.

Humans have contributed to the extinction of many plants and animals.

Humans are herd animals with an instinctive need to belong to groups, and personal development can only take place in an interpersonal context.

Humans share aspects of aggression with non-human animals, and have specific aspects and complexity related to factors such as genetics, early development, social learning and flexibility, culture and morals.

Humans, and grazing animals, were active participants in the process of prairie formation and the establishment of the diversity of graminoid and forbs species.

Humans, like most animals, have no means to excrete excess iron.

Humans and animals for example make loud sounds, attempt to look physically larger, bare their teeth, and stare.

Humans and many other animals do not look at a scene in fixed steadiness ( as opposed to most birds, for example ); instead, the eyes move around, locating interesting parts of the scene and building up a mental, three-dimensional ' map ' corresponding to the scene ( as opposed to the graphical map of avians, that often relies upon detection of angular movement on the retina ).

Humans are social animals, and ill-equipped to live on their own.

Humans have poor night vision compared to many animals, in part because the human eye lacks a tapetum lucidum.

Humans, and other animals that walk on the soles of their feet, are described as being plantigrade ; unguligrade animals are those that walk on hooves at the tips of their toes.

Humans domesticated livestock animals to accompany the resulting sedentary societies.

Humans and animals are mostly incapable of synthesizing carotenoids, and must obtain them through their diet.

Humans, like most other animals, breathe by negative pressure breathing: the rib cage expands and the diaphragm contracts, expanding the chest cavity.

Humans first domesticated plants for farming, then livestock animals to accompany the resulting sedentary societies.

Humans unlike other animals that catch prey remove heat with a specialized thermoregulation based on sweat evaporation.

Humans and other animals often display myotonia when placed in situations of extreme stress or fear ; a resultant increase in ' fight-or-flight ' hormones such as epinephrine and cortisol may cause increased muscle tension throughout the body.

Humans also often seek to mimic animals ' communicative signals in order to interact with the animals.