Reference: jacksonb
if we leave the emotion out of the argument for a minute, i know if i had a rat in my house, i'd call the pest control people in, who would either poison it, causing it to bleed internally or use a dog to dig it out. the end result would be a dead rat. the reasons for slaying the rat would not matter to the rat, because it would still be dead.
Different situation, though. A wild rat living in your house could cause damage - it would eat and contaminate your food with its cocktail of diseases, although town pigeons actually carry more of these, and we don't go round killing them - we even feed them. But a rat in your house could nibble through your electric cables, bite you or your kids and generally be a right nuisance.This one in the jungle though, wasn't doing any harm. It was a domesticated one (these don't carry any diseases) and not likely to cause any trouble. It just made those two berks feel like "men" to kill it and eat it. The producers may as well have given them a tame hamster to practice their "hunter-gatherer" skills on.