He did plan to be gone for months.<quoted text>
I doubt he planned his hiking trip to last three months. In retrospect, taking that dog along was a good idea; it saved his life.
If he had a rifle, he could have shot the bear. Three hundred pounds of fatty bear meat would have fed both him and the dog for three months.
"Lavoie’s family reported him missing only a few weeks ago because he had planned to be gone on a months-long outdoor adventure."
For an experienced man, he did many things wrong, like storing the food in the canoe.