I have friends that live in Montana,about 80 miles south of Canada,They see Wolves very often,Almost on a daily basis!This scenario doesn't mention it's location so,It could be Anywhere!The re-introduction of Wolves to America(Canadian Wolves),Their success has brought their numbers way,way up,& The fact it is Unlawful to shoot them,has allowed for a Great many of them to spread out to far beyond the predictions of The Fish & Game Dept.,It's all a matter of a short time when they make their debut into more populated area's,that will probably be their demise,as well!Susan mentioned Wild Dogs of which is a More likely scenario within this scenario,I have seen packs of dogs while hiking here in the local mountains though they were quite far from me,Both times,I have seen their tracks & remains of carcass Many times!Nothing gets ruled out in this scenario as,There are no rules!