"I think it's more making killing them not go to waste. Same with the goats?" Nothing was said about goats, but you know.

"If you have to kill any, you can let me know, I can carry them easy." Cheat code arms band, stick dead animals in there!! "We can give them to the locals too, if they really want them."

Waste not, want not or whatever. If he hadn't been in Spira for the time he had and been on the train longer, he'd be more squeamish about this. But, this is just their life.