Are faces special for sheep? Evidence from facial and object discrimination learning tests showing effects of inversion and social familiarity

KM Kendrick, K Atkins, MR Hinton, P Heavens… - Behavioural …, 1996 - Elsevier
We have previously shown that sheep, like monkeys, have neural circuits within the
temporal lobe that respond preferentially to faces. They can also discriminate between
sheep, humans and other animals on the basis of facial cues using an enclosed Y-maze. In
the present study we investigated the speed with which Clun Forest sheep learn to
discriminate between familiar and unfamiliar faces, as opposed to symbols, in order to gain
a food reward using the same Y-maze apparatus. Animals (n= 10) received 1 day of training …