Puff was 100% Cobes' fault, no denying it. He gushed over it when Homefelon Ian brought it over to show him, and when Homefelon Ian had to go where Puff couldn't come, Ian gave the lizard to Cobes. A lot of people, including his actual trusted friends, informed Cobes on the proper ways to take care of Puff but he didn't listen as usual. Perhaps due to being innundated with trolls saying the same shit, whatever, only Cobes knows. Either Cobes killed the lizard and made up a story or he was stupid enough to take Puff out into the cold fall evening to smoke and too drunk or high to chase after the little guy when he jumped off into the grass.