science

Human uses of mammals

Human uses of mammals is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Human uses of mammals rather than just read about it. In short: Human uses of mammals include both practical uses, such as for food, sport, and transport, and symbolic uses, such as in art and mythology. Mammals have played a crucial role in creating and sustaining human culture.

Key takeaways

Human uses of mammals belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Human uses of mammals to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Human uses of mammals from memory before moving on to harder problems.

Reference excerpt

Human uses of mammals include both practical uses, such as for food, sport, and transport, and symbolic uses, such as in art and mythology. Mammals have played a crucial role in creating and sustaining human culture. Domestication of mammals was instrumental in the Neolithic Revolution's development of agriculture and of civilisation, causing farming to replace hunting and gathering around the world, and cities to replace scattered communities. Mammals provide dairy products and much of the meat eaten by the human population, whether farmed or hunted. They also yielded leather and wool for clothing and equipment. Until the arrival of mechanised transport, domesticated mammals provided a large part of the power used for work and transport. They serve as models in biological research, such as in genetics, and in drug testing. Mammals are the most popular of pets, with tens of millions of dogs, cats and other animals including rabbits and mice kept by families around the world. Mammals such as horses and deer are among the earliest subjects of art, being found in the Upper Paleolithic cave paintings such as at Lascaux. Major artists such as Albrecht Dürer, George Stubbs and Edwin Landseer are known for their portraits of animals. Animals further play a wide variety of roles in literature, film, mythology, and religion. A major way that people relate to mammals (and some other animals) is by anthropomorphising them, ascribing human emotions and goals to them. This has been deprecated when it occurs in science, though more recently zoologists have taken a more lenient view of it.

Context Culture consists of the social behaviour and norms found in human societies and transmitted through social learning. Cultural universals in all human societies include expressive forms like art, music, dance, ritual, religion, and technologies like tool usage, cooking, shelter, and clothing. The concept of material culture covers physical expressions such as technology, architecture and art, whereas immaterial culture includes principles of social organization, mythology, philosophy, literature, and science. This article describes the roles played by mammals in human culture, so defined.

Practical uses

Domestication in the Neolithic agricultural revolution

Charles Darwin, Jared Diamond and others have noted the importance of domesticated mammals in the Neolithic development of agriculture and of civilisation, causing farmers to replace hunter-gatherers around the world. This transition from hunting and gathering to herding flocks and growing crops was a major step in human history. The new agricultural economies, based on domesticated mammals, caused "radical restructuring of human societies, worldwide alterations in biodiversity, and significant changes in the Earth's landforms and its atmosphere... momentous outcomes". Diamond observed that the large mammals that were domesticated were unusual in sharing a set of desirable characteristics. They consumed a diet that humans could readily supply; they grew rapidly and gave birth frequently; they had a mild disposition; they were willing to breed in captivity; they had convenient herd dominance hierarchies; and they remained calm in enclosures. Carlos Driscoll and colleagues reached a similar conclusion, observing that "it was intelligently designed changes to the genetic composition of natural biota that made the real tools. In some sense, Neolithic farmers were the first geneticists and domestic agriculture was the lever with which they moved the world." Driscoll and colleagues list recurring characteristics of domesticated mammals as "dwarfs and giants, piebald coat color, wavy or curly hair, fewer vertebrae, shorter tails, rolled tails, and floppy ears or other manifestations of neoteny."

For food and other products

Humans and their livestock make up more than 90% of the biomass of all terrestrial vertebrates, and almost as much as all insects combined. Mammals form a large part of the livestock raised for meat and dairy products across the world, whether intensively farmed or by more or less mobile pastoralism. They include (2011) around 1.4 billion cattle, 1.2 billion sheep, 1 billion domestic pigs, and (1985) over 700 million rabbits. Cattle provide a large part of the leather used for clothing products such as shoes, handbags and belts, as well as for upholstery. Wool has been used for centuries for clothing including suits and tweed jackets as well as knitwear such as pullovers. The primary source of wool is sheep, but goats provide angora and cashmere, and alpacas provide a luxurious fleece.

For work and transport

Working domestic animals including cattle and horses have been used for work and transport from the origins of agriculture, their numbers declining with the arrival of mechanised transport and agricultural machinery. In 2004 they still provided some 80% of the power for the mainly small farms in the third world, and some 20% of the world's transport, again mainly in rural areas. In mountainous regions unsuitable for wheeled vehicles, pack animals continue to transport goods.

In science

Mammals serve a major role in science as experimental animals, both in fundamental biological research, such as in genetics, and in the development of new medicines, which must be tested exhaustively to demonstrate their safety. Millions of mammals, especially mice and rats, are used in experiments each year. A knockout mouse is a genetically modified mouse with an inactivated gene, replaced or disrupted with an artificial piece of DNA. They enable the study of sequenced genes whose functions are unknown. A small percentage of the mammals are non-human primates, including the grivet, the rhesus macaque, and the crab-eating macaque, which are used in research for their similarity to humans.

As pets

Mammals are the most popular pets in the Western world, with the most kept species being dogs, cats, and rabbits. For example, in America in 2012 there were some 78 million dogs, 86 million cats, and 3.5 million rabbits. There is a tension between the role of animals as companions to humans, and their existence as individuals with rights of their own.

For sport

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Human uses of mammals

Start with the simplest possible case. Write down what Human uses of mammals claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Human uses of mammals before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Human uses of mammals ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Human uses of mammals

In research: Human uses of mammals appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Human uses of mammals in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Human uses of mammals is common in secondary-school and first-year university syllabi. It links to neighbouring topics Mammals and humans, so understanding it makes those chapters shorter.
In everyday life: Look for Human uses of mammals outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Human uses of mammals in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Human uses of mammals means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Human uses of mammals out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Human uses of mammals in simple terms?

Why does Human uses of mammals matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Human uses of mammals?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Human uses of mammals.