Leather in the context of Rawhide (material)

Drawing is a visual art that uses an instrument to mark paper or another two-dimensional surface, or a digital representation of such. Traditionally, the instruments used to create a drawing include pencils, crayons, and ink pens, sometimes in combination. More modern tools include computer styluses with mice and graphics tablets and gamepads in VR drawing software.

A drawing instrument releases a small amount of material onto a surface, leaving a visible mark. There are many drawing instruments such as pen, pencils, pastel, crayons, markers, color pencils, water color, and more. The most common support for drawing is paper, although other materials, such as cardboard, vellum, wood, plastic, leather, canvas, and board, have been used. Temporary drawings may be made on a blackboard or whiteboard. Drawing has been a popular and fundamental means of public expression throughout human history. It is one of the simplest and most efficient means of communicating ideas. The wide availability of drawing instruments makes drawing one of the most common artistic activities.

The Paleolithic (/ˌpeɪlioʊˈlɪθɪk, ˌpæli-/ PAY-lee-oh-LITH-ik, PAL-ee-) or Old Stone Age is a period in human prehistory distinguished by the original development of stone tools. It represents almost the entire period of human prehistoric technology, extending from the earliest known use of stone tools by hominins, c. 3.3 million years ago, to the end of the Pleistocene, c. 11,650 cal BP.

The Paleolithic Age in Europe preceded the Mesolithic Age, although the date of the transition varies geographically by several thousand years. During the Paleolithic Age, hominins grouped together in small societies such as bands and subsisted by gathering plants, fishing, and hunting or scavenging wild animals. The Paleolithic Age is characterized by the use of knapped stone tools, although at the time humans also used wood and bone tools. Other organic commodities were adapted for use as tools, including leather and vegetable fibers; however, due to rapid decomposition, these have not survived to any great degree.

Cattle (Bos taurus) are large, domesticated, bovid ungulates widely kept as livestock. They are prominent modern members of the subfamily Bovinae and the most widespread species of the genus Bos. Mature female cattle are called cows and mature male cattle are bulls. Young female cattle are called heifers, young male cattle are bullocks, and castrated male cattle are known as oxen or steers.

Cattle are commonly raised for meat, for dairy products, and for leather. As draft animals, they pull carts and farm implements. Cattle are considered sacred animals within Hinduism, and it is illegal to kill them in some Indian states. Small breeds such as the miniature Zebu are kept as pets.

Livestock are the domesticated animals that are raised in an agricultural setting to provide labor and produce diversified animal products for human consumption such as meat, eggs, milk, fur, leather, and wool. The term is sometimes used to refer solely to animals which are raised for consumption, and sometimes used to refer solely to farmed ruminants, such as cattle, sheep, and goats. Livestock production are mainly a source for farm work and human consumption.

The breeding, maintenance, slaughter and general subjugation of livestock called animal husbandry, is a part of modern agriculture and has been practiced in many cultures since humanity's transition to farming from hunter-gatherer lifestyles. Animal husbandry practices have varied widely across cultures and periods. It continues to play a major economic and cultural role in numerous communities.

A hide or skin is an animal skin treated for human use. The word "hide" is related to the Dutch word huid and the German word Haut, which mean skin. The industry defines hides as "skins" of large animals e.g. cow, buffalo; while skins refer to "skins" of smaller animals: goat, sheep, deer, pig, fish, alligator, snake, etc.Common commercial hides include leather from cattle and other livestock animals, buckskin, alligator skin and snake skin. All are used for shoes, clothes, leather bags, belts, or other fashion accessories. Leather is also used in cars, upholstery, interior decorating, horse tack and harnesses. Skins are sometimes still gathered from hunting and processed at a domestic or artisanal level but most leather making is now industrialized and large-scale. Various tannins are used for this purpose. Hides are also used as processed chews for dogs or other pets.

The term "skin" is sometimes expanded to include furs, which are harvested from various species, including cats, mustelids, and bears.

A working animal is an animal, usually domesticated, that is kept by humans and trained to perform tasks. Some are used for their physical strength (e.g. oxen and draft horses) or for transportation (e.g. riding horses and camels), while others are service animals trained to execute certain specialized tasks (e.g. hunting and guide dogs, messenger pigeons, and fishing cormorants). They may also be used for milking or herding. Some, at the end of their working lives, may also be used for meat or leather.

The history of working animals may predate agriculture as dogs were used by hunter-gatherer ancestors; around the world, millions of animals work in relationship with their owners. Domesticated species are often bred for different uses and conditions, especially horses and working dogs. Working animals are usually raised on farms, though some are still captured from the wild, such as dolphins and some Asian elephants.

A bracelet is an article of jewellery that is worn around the wrist. Bracelets may serve different uses, such as being worn as an ornament. When worn as ornaments, bracelets may have a supportive function to hold other items of decoration, such as charms. Medical and identity information can be marked on some bracelets, such as allergy bracelets, hospital patient-identification tags, and bracelet tags for newborn babies. Bracelets may be worn to signify a certain phenomenon, such as breast cancer awareness, for religious/cultural purposes or as a sign of LGBTQ pride.

If a bracelet is a single, inflexible loop, it is often called a bangle. When it is worn around the ankle it is called an ankle bracelet or anklet. A boot bracelet is used to decorate boots. Bracelets can be manufactured from metal, leather, cloth, plastic, bead or other materials, and jewellery bracelets sometimes contain jewels, rocks, wood, shells, crystals, metal, or plastic hoops, pearls and many more materials.

Calfskin or calf leather is a leather or membrane produced from the hide of a calf, or juvenile domestic cattle. Calfskin is particularly valuable because of its softness and fine grain, as well as durability. It is commonly used for high-quality clothing, shoes, wallets, and similar products, as well as traditional leather bookbindings. In these contexts, just "calf" is commonly used. Fine calfskin is one of the skins used for vellum and parchment manuscripts.

In Spanish, the word is Ternera/Novillo, referring to leather from animals less than three years old. Chickenskin, despite its name, is a form of calfskin made using the skin of unborn calves.

Tanning, or hide tanning, is the process of treating skins and hides of animals to produce leather. A tannery is the place where the skins are processed.

Historically, vegetable based tanning used tannin, an acidic chemical compound derived from the bark of certain trees, in the production of leather. An alternative method, developed in the 1800s, is chrome tanning, where chromium salts are used instead of natural tannins.

Watercolor (American English) or watercolour (Commonwealth English; see spelling differences), also aquarelle (French: [akwaʁɛl]; from Italian diminutive of Latin aqua 'water'), is a painting method in which the paints are made of pigments suspended in a water-based solution. Watercolor refers to both the medium and the resulting artwork.

The conventional and most common support—material to which the paint is applied—for watercolor paintings is paper, usually special types of watercolor paper. Other supports or substrates include stone, ivory, silk, reed, papyrus, bark papers, plastics, vellum, leather, fabric, wood, and watercolor canvas (coated with a gesso that is specially formulated for use with watercolors). Watercolor paper is often made entirely or partially with cotton. This gives the surface the appropriate texture and minimizes distortion when wet. Watercolor papers are usually cold-pressed papers that provide better texture and appearance. Transparency is the main characteristic of watercolors. "It consists of a mixture of pigments, binders such as gum arabic and humectants such as glycerin, which together with other components, allow the color pigment to join and form the paint paste, which we know as watercolor. With regard to the colors, the quality of the pigments and their degree of concentration, it is what determines how good the watercolor is and also its price. A paint that has a high concentration of pigment, professional type, allows us to use it with a large amount of water without losing the intensity of color." Watercolors can also be made opaque by adding Chinese white. In the 19th century this could be controversial, and not regarded as "true watercolor" in the English tradition, but by about 1880 this dispute was over.

A G-string is a garment consisting of a narrow piece of material that barely covers the genitals, a string-like piece that passes between the buttocks, and a very thin waistband around the hips. There are designs for both women and men. Men's G-strings are similar to women's, but have a front pouch that covers the genitals. G-strings are typically worn as underwear or swimwear or as part of the costume of an exotic dancer.

G-strings are usually made of fabric, lace, leather, or satin. They may serve as a bikini bottom or they may be worn alone as monokinis or topless swimsuits. G-strings are also worn by go-go dancers.

Tannins (or tannoids) are a class of astringent, polyphenolic biomolecules that bind to and precipitate proteins and various other organic compounds including amino acids and alkaloids. The term tannin is widely applied to any large polyphenolic compound containing sufficient hydroxyls and other suitable groups (such as carboxyls) to form strong complexes with various macromolecules.

The term tannin (from scientific French tannin, from French tan "crushed oak bark", tanner "to tan", cognate with English tanning, Medieval Latin tannare, from Proto-Celtic *tannos "oak") refers to the abundance of these compounds in oak bark, which was used in tanning animal hides into leather.

Bovines (subfamily Bovinae) comprise a diverse group of 10 genera of medium to large-sized ungulates, including cattle, bison, African buffalo, water buffalos, and the four-horned and spiral-horned antelopes. The members of this group of bovids are classified into loose tribes rather than formal subgroups, as the evolutionary relationships within the groups are still uncertain. General characteristics include cloven hooves and usually at least one of the sexes of a species having true horns. The largest extant bovine is the gaur.

In many countries, bovine milk and meat is used as food by humans. Cattle are kept as livestock almost everywhere except in parts of India and Nepal, where they are considered sacred by most Hindus. Bovines are used as draft animals and as riding animals. Small breeds of domestic bovine, such as the Miniature Zebu, are kept as pets. Bovine leather is durable and flexible and is used to produce a wide range of goods including clothing and bags.

Beef cattle are cattle raised for meat production (as distinguished from dairy cattle, used for milk (production)). The meat of mature or almost mature cattle is mostly known as beef.In beef production there are three main stages: cow-calf operations, backgrounding, and feedlot operations. The production cycle of the animals starts at cow-calf operations; this operation is designed specifically to breed cows for their offspring. From here the calves are backgrounded for a feedlot. Animals grown specifically for the feedlot are known as feeder cattle, the goal of these animals is fattening. Animals not grown for a feedlot are typically female and are commonly known as replacement heifers.While the principal use of beef cattle is meat production, other uses include leather, and beef by-products used in candy, shampoo, cosmetics, and insulin.