This is not a great resource, because cows and sheep get 95% of their water intake from eating grass and drinking rain water. But when you grow vegetables, you actually have to water them a lot.
that's not true. cattle hardly get any of the global soy crop, and most of what is fed to animals is the byproduct from making soybean oil. cattle are fed about 2% of global soy iirc and only 7% of all the soy that is fed to any animal is whole soybeans. the rest is basically industrial waste.
they're not dumb, they just have way more cows in their stables than the piece of land the stable is on could ever support with any crop. Am in Belgium. Pretty sure cows here eat a lot more imported crops (mostly from south america) processed to livestockfeed than they eat local grass.
Well, I don't know how it works in Belgium, but in the UK cows are usually moved between fields and field owners sometimes even pay for grazing animals to graze on their fields to keep them tidy. Paying for soy VS getting paid for grazing is a no brainer here.