There are miniature versions of almost all animals. Try goat's milk from a goat farmer and see if you can wrap your taste buds around it. If you can, then that might solve the cow problem. Remember cows have to be bred to have milk....which means you now have one of two things, either another animal to take care of, or one you have to sell/butcher. (A lot of male calves become veal) Vet bills are smaller for goats and even goats come in miniature versions.
And goats have droppings that look like berries, not huge plops of poo. And if you get the right breed of goat, you will have no problem selling the offspring....goats are IN right now.
If goat's milk doesn't turn you on
there are minature cows. Seriously. About half the size of regular cows and twice the cost to purchase. (I want one soooooo bad. Ray says "and who is going to milk it, cuz I am too tall to get down that far. LOL ) FYI:
http://www.bigpictureagriculture.com/2011/10/ten-miniature-cattle-breeds-for-your.html And cows don't bite, but they will step on your foot
....they make it look like an accident, but I am sure they do it on purpose. ( !!!) First thing I learned about cows was to stay away from the back end.
And if you are going to bake, then you definately want ducks. I understand that duck eggs are the cat's meow for cake making. Ask Stony what breed of ducks lay eggs for the longest part of the year. (Some are seasonal layers, some aren't)