Dogs are loyal to the death and would continue on with the family literally until they fall over dead. Would the paws be burned from the dirt? I doubt it. I have no doubt the dog could have and would have done this hike as long as the family was walking. I mean, we don’t know who of all of them was the first to become incapacitated—it could have been Oski and they all stopped and eventually succumbed.My question is more specific. IMO Oski would have collapsed not that long into the hike. Were his paws burnt? If not it doesn't make sense that he was able to continue in this condition of such extreme heat. I still think something happened early on in their hike that may have spooked them to continue.
I think they continued just because that was the plan, and they felt relatively fine until they were at the bottom of the canyon. Going home meant hiking all the way UP as the heat climbed and that’s what did them in IMO.