Husky and the Camino
I started from St Jean last May 9th with my 2 Samoyeds, one 5 years old female and one 2 years old male. Though we did not get further than Los Arcos, due to a leg problem of one of the the dogs, heat was not a problem for them. We have had more than 40 C during the day, and down to some 30's during the nights. All days and nights! Both dogs carried a back pack with some 5 kg. No problem. Of cours the dogs have been trained, as I have, on walking long distances with their back pack.
The leg problem was a kind of a sprain in an elbow of the female dog. Could have happened to me also, in my case in a knee not an elbow of course. Bad luck, we had to stop.
You will encounter a lot of problems walking the Camino with a dog. But if you insist (as I did) on taking your dog and you are ready to face and handle the difficulties, it can be done. And it is a great experience.
And you should see your vet before you go. The dog needs special vaccination and medicines because of very dangerous (for dogs that is) ticks and some kind of sand fly.
I am a bit short of time now. But if you need more info please let me know.
Gerard