Pigs are actually a lot better than cows because they are monogastric. So we can cut CO2 emissions by eating more pork and less beef.

https://en.wikipedia.org/wiki/Ruminant#Ruminants_and_climate...

Even better, kangaroos (I know, I know, poor skippy...). Their digestive systems don't produce methane: https://en.wikipedia.org/wiki/Kangaroo#Absence_of_digestive_...

And I'm less sure of this, but I've heard that they cause far less soil erosion compared to cows, as their weight is spread out over a much larger area (i.e. they have big feet). Their populations in some parts of Australia have also reached unsustainable starvation levels, to the point where some State-level governments have initiated culling (i.e. licensed shooting of kangaroos, in a country with very tight gun-control laws).

Or how about not eating animals at all, since it's cruel and unnecessary altogether? Difficult mental and emotional leap for most people, I know.

Or at least, we should teach butchery to kids. That way, they'd know what it means to actually kill to eat. The only thing I've ever killed is a lobster, and it helps a lot to relate to what you have on your plate...

Doesn't methane have a much more powerful greenhouse effect than CO2 though?

Yeah, that's how the 5% becomes 14% equivalent in @jessriedel's numbers.

Yes but it breaks down into CO2 very quickly.