recognize in pigs traits such as intelligence, stubbornness, friendliness and gluttony.

Problem solving

Both chimpanzees and pigs are capable of understanding that a joystick can be used to direct a pointer in a screen. According to one study, pigs outperformed dogs at directing the pointer towards a target.

Pigs can use their problem solving skills to free other pigs from cage traps.

Self-awareness

The mirror test is one

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