Funny how different people see different things in pictures like that !
Having lived all my life in remote areas of western Canada I can tell you I have seen many Wolves and a few Cougar : I know the difference !
Also not a dog.
Put some miles on today trying to get one road ahead of them so I could set up for calling. I spoke with a number of farmers that had seen the tracks as well, and all wanted them dead ASAP. This area is a farming area. Lots of open fields. Shelter belt tree lines and bush. One big river and many small ones.
Easy for them to put the miles on without being seen. However, being (mostly) farming area, they'll not last long.
The track in the picture that is six inches long includes the nails. Remember, it is in fresh snow. The only place the tracks were clear enough to identify was on the hard pack lane way, and it has fresh snow. Also fresh snow had fallen on the tracks before I decided to take pictures.
One more thing....I've seen Wolf tracks much bigger than these.
Also, this record of 175lbs you mention has to be way off base. They get bigger.
Wolves up here are not threatened. Packs are expanding all over western Canada . So much so, culls take place.
If I manage to see them, I'll get close up pictures of them
Last tracks seen were nearly 10 miles away, this afternoon. Odds are, they were just passing through.