Pigs can recognise human faces: They use our mouths and noses to tell if we're looking at them

Pigs can recognise whether they are looking at the front or back of a human head using key features like our mouths and noses as cues. In visual tasks, the animals were able to pick out whether they were looking at someone's face or the back of their head with up to 80 per cent accuracy. Scientists said their paper shows pigs have better visual-based memory and intelligence than previous studies suggest. Pigs can recognise whether they are looking at the front or back of a human head using key features like our mouths and noses as cues. In the first of two studies from researchers at the Messerli Research Institute in Vienna, Austria, two groups of pigs were trained to discriminate between the front and back of the heads of ten people via photos on a computer screen.