Pigs are one of the smartest animals on Earth. Highly social, intelligent, and curious, they engage in complex tasks, form elaborate, cooperative social groups and feel fear, pain, and stress. Studies show that they are more intelligent than dogs and even some primates, and scientists have demonstrated that pigs are capable of playing simple video games, learning from each other, and even learning names.
Most breeding pigs in the U.S. are confined in “gestation crates” for virtually their entire lives. For several years, they’re confined to crates that nearly immobilize them, enduring a cycle of repeated impregnation. These individual cages are approximately 2 feet wide—so small the animals can’t even turn around or take more than a step forward or backward.
Due to the duration and severity of their confinement, these pigs’ suffering is among the worst of all factory-farmed animals.
Source : Humane Society
Further information :
http://www.ciwf.org.uk/farm-animals/pigs/
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