I want to buy boots for warmth more than...
I want to buy boots for warmth more than for traction. Will these keep my dog's paws warm in the Alaskan winters?
Marianne, these should work fine to keep your dogs feet warm in all but the most brutal conditions.
You'll notice many sled-dogs donning booties; many times the boots have holes for the toenails so as to help dogs gain more traction, too.
I'm sure these will definitely help. Have you considered contacting a local dog-club for more tips/ideas specific to your climate? It's a lot of fun, and very helpful, too!