Short answers, pulled from the story.
Pigs were first domesticated around 11,400 years ago in the Tigris Basin. Archaeological evidence from Cyprus indicates that pigs were managed in a semi-wild state during the Neolithic era, marking the beginning of a relationship that spread from the Near East to Europe and eventually to the far corners of the globe.
Pigs regulate their body temperature by wallowing in mud or water to dissipate heat through evaporative cooling. They possess both apocrine and eccrine sweat glands, but the latter are limited to the snout, rendering them unable to cool themselves through thermal sweating like many other mammals.
The gestation period of a pig averages 112 to 120 days. During this time, the mother's body recognizes pregnancy on days 11 to 12, marked by the corpus luteum producing the sex hormone progesterone.
The pig genome has been fully sequenced and reveals approximately 22,342 protein-coding genes. This genetic complexity mirrors the animal's ability to thrive in diverse environments.
China is the world's largest pork producer, producing 55 million tonnes in 2023. The European Union and the United States follow China as the next largest producers of pork globally.
The 2009 swine flu pandemic emerged in 2009 and was caused by an influenza A variant that first emerged in pigs. Pigs have served as reservoirs for viral diseases that are dangerous to humans, contributing to outbreaks such as this pandemic.