Question: What is the purpose an animals skins and organs in cheese making?
About the article "Cheese", section "Origins".

Candidate passages:
Cheese is an ancient food whose origins predate recorded history.
There is no conclusive evidence indicating where cheesemaking originated, either in Europe, Central Asia or the Middle East, but the practice had spread within Europe prior to Roman times and, according to Pliny the Elder, had become a sophisticated enterprise by the time the Roman Empire came into being.
The earliest evidence of cheese-making in the archaeological record dates back to 5,500 BCE, in what is now Kujawy, Poland, where strainers with milk fats molecules have been found.
Earliest proposed dates for the origin of cheesemaking range from around 8000 BCE, when sheep were first domesticated.
Since animal skins and inflated internal organs have, since ancient times, provided storage vessels for a range of foodstuffs, it is probable that the process of cheese making was discovered accidentally by storing milk in a container made from the stomach of an animal, resulting in the milk being turned to curd and whey by the rennet from the stomach.
There is a legend – with variations – about the discovery of cheese by an Arab trader who used this method of storing milk.
Cheesemaking may have begun independently of this by the pressing and salting of curdled milk to preserve it.
Observation that the effect of making milk in an animal stomach gave more solid and better-textured curds may have led to the deliberate addition of rennet.
Early archeological evidence of Egyptian cheese has been found in Egyptian tomb murals, dating to about 2000 BCE.
The earliest cheeses were likely to have been quite sour and salty, similar in texture to rustic cottage cheese or feta, a crumbly, flavorful Greek cheese.
Cheese produced in Europe, where climates are cooler than the Middle East, required less salt for preservation.
With less salt and acidity, the cheese became a suitable environment for useful microbes and molds, giving aged cheeses their respective flavors.
It feeds on dead animals, including dried and smoked meats and animal skins, as well as on cheese.
It is frequently found in cadavers in the later stages of decomposition, and is thus useful in forensic entomology. 
Though shards of pottery pierced with holes found in pile-dwellings of the Urnfield culture on Lake Neuchatel – dated at 6,000 BCE – are hypothesized to be cheese-strainers, the earliest secure evidence of cheese making dates back to 5,500 BCE in Kujawy, Poland.
Dairying seemingly existed around 4,000 BCE in the grasslands of the Sahara.
Hard salted cheese, the only form in which milk can be kept in a hot climate, is likely to have accompanied dairying from the outset.
Since animal skins and inflated internal organs have provided storage vessels since ancient times for a range of foodstuffs, it is probable that the process of cheese making was discovered accidentally by storing milk in a container made from the stomach of a ruminant, resulting in the milk being turned to curd and whey by the rennet remaining in the stomach.
Though an Arab legend attributes the discovery of cheese to an Arab trader who used this method of storing milk, cheese was already well-known among the Sumerians.
Cheesemaking may have begun independently by the pressing and salting of curdled milk in order the better to preserve it.
Observation that the effect of making milk in an animal stomach gave more solid and better-textured curds may have led to the deliberate addition of rennet.
The evidence for cheese (GA.UAR) are the Sumerian cuneiform texts of Third Dynasty of Ur, dated at the early second millennium BCE.
Visual evidence of Egyptian cheesemaking has been found in Egyptian tomb murals, dating to about 2000 BCE.
The earliest cheeses were likely to have been quite sour and salty, similar in texture either to rustic cottage cheese or to present-day feta.
In Late Bronze Age Minoan-Mycenaean Crete, Linear B tablets record the inventorying of cheese (Mycenaean Greek in Linear B: , "tu-ro"; later Greek: ), as well as flocks and shepherds.
Cheese produced in Europe, where climates are cooler than in the Middle East, required less salt for preservation.
With less salt and acidity, the cheese became a suitable environment for useful microbes and molds, giving aged cheeses their pronounced and interesting flavors. 
Little Cheese (real name Chester Cheese) is a fictional character in the DC Comics universe, an anthropomorphic mouse.
Chester Cheese is a superhero who lives on the otherdimensional world of Earth-C, an alternate Earth populated by sentient animals.
His first appearance was in "Captain Carrot and His Amazing Zoo Crew" #12 (February 1983). 
A hide is an animal skin treated for human use.
Hides include leather from cattle and other livestock animals, alligator skins, snake skins for shoes and fashion accessories and furs from wild cats, mink and bears.
In some areas, leather is produced on a domestic or small industrial scale, but most leather making is done on a large scale.
Various tannins are used for this purpose.
Leather from processed hides has a variety of uses, including shoes, clothing, horse tack, horse harness, upholstery and even wall or other surface coverings.