Cows, Camels, Peat Bogs are all mindless AGW bogeymen.
Methane makes up a tiny component of the atmosphere. If a full crowd at Wembley Stadium represented the atmosphere, chances are there would be zero methane molecules. If the population of New York City represented the atmosphere, there would be less than 30 people who would be methane.
Methane is a very reactive gas, which has a short residence time in the atmosphere. Calculations with the RRTM radiative transfer model show that a doubling of methane would increase downwelling longwave radiation in the tropics by less than one tenth of one percent. Even a 1000X increase in methane would increase downwelling longwave radiation in the tropics by only 1%. Hour to hour variations in water vapor have more effect than a 10X increase in methane.
Grass absorbs CO2 and emits oxygen. Cows eat grass. The grass grows back, absorbing more CO2, and emitting more oxygen. Cows eat more grass. The grass grows back, absorbs more CO2 and emits more oxygen. If you look only at the front end of a cow, it is a carbon sink.
Our friends, being the horses asses that they are, look only at the back end of livestock. The amount of carbon coming out of an animal’s orifices is exactly equal to the amount that went in its mouth. Blaming cows for global warming is yet another example of the extreme stupidity of the flat-earth global warming religion.