And, cows are the only ones to be targeted. But, they don't take into consideration all the other ruminants that have 4 stomachs. For instance, deer, elk, moose, wildebeests, water buffalo, sheep and the list goes on. Of course, don't forget horses. Even though they only have the one stomach, they fart up a storm.
Just to confuse these twits even more let us consider humans. A Canadian study that was conducted some years ago found that female humans passed an average of 3 l. of gas a day, and males 3.3 . a day.
So, there are an estimated 7 billion humans on the face of the earth, probably more than all of the 4 stomach animals.
Do a little math. Maybe these scientists, so-called, might consider restricting their own gas expulsions.
There are 20 million deer in the Northwest of the country.
I always heard that an Army mule was the farting standard.