Animal agriculture is responsible for more greenhouse gas emissions than the combined exhaust from all transportation

According to UN’s Food and Agriculture Organization (FAO) 14.5% to 18% of all global greenhouse gasses are produced from animal agriculture. Global transportation accounts for about 13% of all greenhouse gasses.
Environmental Protection Agency’s (EPA) claim that USA’s livestock emissions are only 4% of GHG is inaccurate, likely by not calculating the full impact of methane which is 25-100 times more destructive than carbon dioxide on a 20 year timeframe. More here.