Non-human (also spelled nonhuman) is any entity displaying some, but not enough, human characteristics to be considered a human. The term has been used in a variety of contexts and may refer to objects that have been developed with human intelligence, such as robots or vehicles.
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👉 Non-human in the context of Human-animal hybrids
A human–animal hybrid (or animal–human hybrid) is a hypothetical organism that incorporates elements from both humans and non-human animals. In a technical sense, a human–animal hybrid would be defined as an organism in which each cell contains both human and non-human genetic material. This contrasts with a non-human chimera in which some cells are human and the other are derived from a non-human organism (a human chimera, by contrast, consists entirely of human cells from different zygotes.)
Examples of human–animal hybrids mainly include humanized mice that have been genetically modified by xenotransplantation of human genes. Humanized mice are commonly used as small animal models in biological and medical research for developing human therapeutics.
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Non-human in the context of Animal cognition
Animal cognition encompasses the mental capacities of non-human animals, including insect cognition. The study of animal conditioning and learning used in this field was developed from comparative psychology. It has also been strongly influenced by research in ethology, behavioral ecology, and evolutionary psychology; the alternative name cognitive ethology is sometimes used. Many behaviors associated with the term animal intelligence are also subsumed within animal cognition.
Researchers have examined animal cognition in mammals (especially primates, cetaceans, elephants, bears, dogs, cats, pigs, horses, cattle, raccoons and rodents), birds (including parrots, fowl, corvids and pigeons), reptiles (lizards, crocodilians, snakes, and turtles), fish and invertebrates (including cephalopods, spiders and insects).
Non-human in the context of Model organism
A model organism is a non-human species that is extensively studied to understand particular biological phenomena, with the expectation that discoveries made in the model organism will provide insight into the workings of other organisms. Model organisms are widely used to research human disease when human experimentation would be unfeasible or unethical. This strategy is made possible by the common descent of all living organisms, and the conservation of metabolic and developmental pathways and genetic material over the course of evolution.
Research using animal models has been central to most of the achievements of modern medicine. It has contributed most of the basic knowledge in fields such as human physiology and biochemistry, and has played significant roles in fields such as neuroscience and infectious disease. The results have included the near-eradication of polio and the development of organ transplantation, and have benefited both humans and animals. From 1910 to 1927, Thomas Hunt Morgan's work with the fruit fly Drosophila melanogaster identified chromosomes as the vector of inheritance for genes, and Eric Kandel wrote that Morgan's discoveries "helped transform biology into an experimental science". Research in model organisms led to further medical advances, such as the production of the diphtheria antitoxin and the 1922 discovery of insulin and its use in treating diabetes, which had previously meant death. Modern general anaesthetics such as halothane were also developed through studies on model organisms, and are necessary for modern, complex surgical operations. Other 20th-century medical advances and treatments that relied on research performed in animals include organ transplant techniques, the heart-lung machine, antibiotics, and the whooping cough vaccine.
Non-human in the context of Otherkin
Otherkin is a subculture of individuals who identify as partially or entirely nonhuman. Some otherkin believe their identity derives from non-physical spiritual phenomena, such as having a nonhuman soul or reincarnation. Some otherkin give non-spiritual explanations for themselves, such as unusual psychology or neurodivergence, or as part of dissociative identity disorder or being plural. Many otherkin say they are physically human.
The otherkin subculture developed primarily as an online community during the 1990s. It had partly grown out of some small groups of people who described themselves as elves during the 1970s and 1980s. During the late 2000s, the word has come to be treated as an umbrella term for some other nonhuman identity subcultures.