Pigs are among the most cognitively complex farmed animals. Understanding pig intelligence helps clarify the severity of welfare deprivations in standard farming practices.
The cognitive complexity of pigs makes their confinement in standard factory farming conditions ethically significant in ways beyond simple physical discomfort. A highly intelligent, curious, socially complex animal confined in a gestation crate unable to turn around, deprived of rooting substrate, and housed without meaningful social interaction is experiencing welfare deprivation at a cognitive and emotional level that matches or exceeds its physical discomfort. The frustration of strongly motivated behaviors — exploration, rooting, social interaction — causes psychological suffering. Understanding pig cognition does not just create sympathy; it changes the moral calculus of farming practices by revealing the depth of what those practices deny.