Asked by: Tim Maddox, Peterborough
Wincing is a form of communication. Rats, rabbits, sheep, horses and pigs all have their own wince expression when they are in pain. This lets other members of their family or herd know that something nearby is dangerous.
Wincing when you see someone else in pain is part of the human ability to empathise. We are social animals, and imagining how those around us might be feeling is part of the emotional ‘glue’ that keeps us together.