Check the size of the prints in the snow...a coyote has small prints and a wolf print is about the size of a mans hand.
I'd say coyote...spray apple cider vineagar around your property..run a radio and haze it loudly..be careful if its a she tote with pups...they are more aggressive.
There will be no pups with her in tote they will be giving birth mid march to April maybe later in colder climates.