This is something that hasn’t been mentioned anywhere, but gray foxes (Urocyon) can have blue eyes:
And another (perhaps the Western version, which might be a distinct species):
Most of them have very dark brown eyes, and you really can’t see that they don’t have the exact same cat-like pupils of the red fox. However, the blue-eyed ones really do show off their oval-shaped pupils quite well.
Gray foxes are the most basal species of canid and are not closely related to any other canids, except of the island fox of California, which is just an insular dwarf of the mainland species.
The exact systematics of gray foxes are still being worked out, but I do expect surprises in the future. These animals have an extensive range in the Americas, and their lineage is really quite divergent from anything else we think of as being in the dog family.
Blue-eyes, well, they certainly make them more stunninglybl attractive.