hunter-gatherer or forager is a human living an ancestrally derived lifestyle in which most or all food is obtained by foraging,  that is, by gathering food from local sources, especially edible wild  plants but also insects, fungi, honey, or anything safe to eat, and/or by hunting game (pursuing and/or trapping and killing wild animals, including catching fish), roughly as most animal omnivores do. Hunter-gatherer societies stand in contrast to the more sedentary agricultural societies, which rely mainly on cultivating crops and raising domesticated animals for food production, although the boundaries between the two ways of living are not completely distinct.
Hunting and gathering was humanity's original and most enduring successful
competitive adaptation in the natural world, occupying at least 90 percent of human history. Following the  invention of agriculture, hunter-gatherers who did not change were displaced or conquered by farming or pastoralist groups in most parts of the world.
Only a few contemporary societies of
uncontacted people are still classified as hunter-gatherers, and many supplement their foraging activity with horticulture or pastoralism. 
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