For anyone familiar with the western part of the US and the mountainous
areas; we have a high population of 'big cats' called, variously,
'puma', 'cougar', and 'mountain lion'. I have had the dubious fortune to
have worked on early american sites within these areas, and have
witnessed some of the aftermath of an attack on sheep, cattle, and deer.
The ususal form is of a leap on the back of the victim, lunging for the
neck and the attempt to kill. [I have seen victims who fought the attack
and survived, usually Elk and large muledeer]. The claw marks on both
back and neck are the clue. Althogh we have bear in the area, also, they
attack in a much different way, if at all, in regards to large animals.