If it makes you feel any better, this moose was more than likely dead 2 minutes after he slipped into this crevice.

Consider the fact that the initial impact of the fall would have expelled any air in his lungs immediately.

Due to his massive weight and size, and the fact that he was now wedged into a space smaller than his ribcage, it would have been impossible for him to take a breath in.

The panic of being stuck/ not being able to breathe, combined with the actual fact that he took his last breath long before he fell surely sealed the deal.

It was definitely an awful 2 minutes, but I would consider that a small mercy in comparison to a long drawn out death that could have lasted days.