Here is a quick video of celebrity chef Gordon Ramsay taking a moment to learn about pig factory farming practices in the UK. In the US and Canada we can see the same common farming practices used.
Pigs are intelligent and social animals. They build nests to nurture their young, and have very high cleanliness standards with designated defecation areas. They have an extremely sensitive sense of smell and with this can find water underground. They don't sweat so it is important for pigs to have access to dirt and mud to cool themselves in the heat, as elephants would.
As Canada is the 3rd largest largest exporter of pork, we too have large factory farms which mutilate, confine and murder these fascinating and sweet creatures.