Research on pig cognition and brain development demonstrates that environmental enrichment during early life produces lasting neurological and behavioral benefits, strengthening the case for enriched rearing systems.
The cognitive complexity of pigs makes their standard housing conditions particularly concerning from a welfare perspective. A highly intelligent, curious, and social animal confined to environments that provide minimal cognitive stimulation is effectively experiencing sustained sensory and intellectual deprivation. Research showing that early enrichment produces lasting neurological benefits, and that impoverishment causes lasting deficits, demonstrates that intensive housing doesn't just prevent welfare in the moment but shapes the animal's capacity for welfare over its lifetime. The welfare case for enriched environments for pigs is not merely about preventing boredom but about allowing normal cognitive and neurological development.