https://en.wikipedia.org/wiki/Greenhouse_gas_emissions https://en.wikipedia.org/wiki/Greenhouse_gas_emissions > Ruminant cattle for beef and dairy rank high in

https://en.wikipedia.org/wiki/Greenhouse_gas_emissions https://en.wikipedia.org/wiki/Greenhouse_gas_emissions > Ruminant cattle for beef and dairy rank high in greenhouse-gas emissions; monogastric, or pigs and poultry-related foods, are low. I think it's all about the methane, for which cattle are notorious.