Editing Sty (section)

==The hog pen==
Farming pigs outdoors poses problems, but the small scale of family farming made it possible to manage these problems.  In particular, hogs suffer 'heat stress' in high temperatures and have no [[sweat gland]]s to naturally cool themselves. To cool themselves, hogs need access to water or a 'wallow', which is an area of mud.  Without access to water or mud, pigs must wallow in their own excrement. Normally, pigs avoid their own excrement; pigs do not defecate just anywhere in their pen–they use one corner of it for their 'toilet'. Ideally, a cement wallow which contains water cools the pig much better. Alternatively, shade may be provided for the pigs. Pink pigs are especially prone to sunburn.  

Many family farm hog pens were improvised enclosures made of any handy free material. The pen is often kept small to conserve building material and effort.

<gallery widths="200px" heights="160px">
Image:Three Pigs Sleeping.JPG|Three pigs [[sleeping]]
Image:Domestic Pig In A Sty.JPG|A domestic pig sleeping in a sty, with a slop bucket
</gallery>