America also does not include the militaries pollution. Which alone puts out more CO2 than Denmark

Depending on the study, estimates of animal farming’s contribution to climate change vary considerably. Widely cited, peer-reviewed sources — including the United Nations report “Livestock’s Long Shadow” and subsequent academic analyses — consistently place the industry’s share of global greenhouse gas emissions between 16.5% and 28%.

A 2013 UN report gave a lower estimate of just 14.5 percent, but this figure has been widely criticized for contradicting available evidence and for being influenced by industry lobbying.

The Truth Behind the Numbers

and the follow-up