Exactly.
I can see doing it when you’re approaching, say, the two-week mark and haven’t seen any other possible sources of food the entire time. This guy, however, didn’t survive three weeks off of eating that dog alone — there obviously was other food in the area and he obviously figured out how to get it. I wouldn’t imagine dog meat stays good very long when you don’t have a freezer.
His dog saved his life once. That “second time” was pure selfishness on his own behalf.
“Three weeks” should have been “three months.”
The guy supposedly survived three months off of that dog.