>>21554951
Let's do some autism math

A beef cow is slaughtered after 12-24 months (it varies, but let's just go with 24 since it's the highest number)
A beef cow or "dry cow" (as in not dairy) eats 24-30 pounds of dry feed per day on average, but let's be extra generous and go with 30, since it's the higher number.
24 months is 730 days, 730 times 30 is 21,900
That comes out to about 9,933 kilograms.
Let's round it up to a ton.
So a beef cow consumes about a metric ton of dry feed WITHIN ITS LIFETIME.

Cow feed is made up of a bunch of different shit and the amount cows need to drink varies based on how much wet/dry feed they are consuming.

BUT - since we're being generous here - let's just go with the most water-intensive feed possible, which is alfalfa, "the thirstiest crop in the US south-west", and then ADD the maximum amount of water that cows drink on a daily basis, just so that we shoot as high as possible in terms of water consumption.