Gonna have to look this up. My sister on a farm got a rescue dog a Kani Corso..it was a military dog trained in this area.long story short owner tossed it cause it had bad vision so rescue picked it up gave it built in 5k contact lens my sister got it and that sucker was a psycho with weird built in commands that she would discover by accident Slap a newspaper in your hand and away it would go in full patrol mode looking for intruders or something.it later died of a heart attack..