I found it here: http://www.horseandhound.co.uk/horse-care/horse-care-tips/canine-teeth-in-horses/ http://www.horseandhound.co.uk/horse-care/horse-care-tips/ca.

I found it here: http://www.horseandhound.co.uk/horse-care/horse-care-tips/canine-teeth-in-horses/ http://www.horseandhound.co.uk/horse-care/horse-care-tips/ca... The relevant part follows: Originally “fighting teeth”, they have no occlusal contact, i.e. the opposing upper and lower canines do not meet, so they are of no benefit in the eating process.