Earlier quoted context omitted.
Consider the intelligence of pigs as well. Even if cows, sheep, deer, rabbits, chickens, turkeys, et al. all sit below the "I don't want to eat you" cutoff point, pigs should probably be above it.
I’ve been able to give up eating cephalopods, but pigs are too delicious to give up.
cruelty_cow = IntModifier * Animal_Intelligence /(AmountOfProvidedMeat/Deaths) * FrequencyOfEatingThisAnimal
Solve for:
Min (cruelty_cow + cruelty_pig + cruelty_octopus + ...)
Where AmountOfProvidedMeat > NeededMeatForHealthyDiet
And Cost * AmountOfProvidedMeat I've generally found that maximizing on Fish, Chicken, and Cow (in that order) seems to be the best bet. I tend not to touch veal, lamb, or octopus.