***Cows and other livestock cause 18% of the damage to the ozone layer; ranking 2nd only to carbon dioxide…Freon contributes far less than either of these. Humans of course, donate their fair share as well; and insects? Hmmm…not sure if insects fart or not…Gotta look that up. Perhaps ants expel small amounts of methane gas after invading a barbecue picnic (I wonder if it smells like an ant-hill?) and certainly the queen ant must get rather windy laying all those eggs...and exactly what makes a Stink Bug stink anyway; and how about those Dung Beetles? Well, that seems fairly obvious...