Methane is a stronger greenhouse gas in the short and medium term, which is non-negligible due to feedback effects. Additionally cows are not carbon-neutral if

Methane is a stronger greenhouse gas in the short and medium term, which is non-negligible due to feedback effects. Additionally cows are not carbon-neutral if you take opportunity costs into account. The land used to make feed could be forest sequestering carbon instead since eating vegetarian or poultry based diet requires less primary production to yield the same calorie intake for humans.