As to cougars only going for the throat that is if it is a ground based attack unless they go for a jump to drag it's prey down.
If they are attacking from an elevated position they go for neck bite to break the spinal cord.
Seen it before out west growing up on deer, cattle, horses, etc.
The wound to the foreleg could be an indication of a back elevated attack and the wound caused by the cougars claws digging for a hold.
To many interpretations to say for sure. Although I would like to know how they explain the striation patterns.
Funny thing here though in 2 years we have had two cat attacks one in a tent and the DNR called it a bobcat another a few weeks ago that still has been kept quiet about even though the guy was lifeflighted out. ER doc from out west says it was a cougar, victim says cougar, tracks say cougar, unofficially LEO's say cougar, DNR says unknown animal.
As to cougars in Fargo my hunting buddy who was building a house on the Cheyenne (i think that is the name of it) in west fargo had one come thru and the whole work crew saw it. This was 2 years ago.
Good luck folks maybe time to invest in some hounds, or some large herding breed dogs.