How about a goat instead of a cow. Does anyone around you raise goats. Fresh goat milk tasts wonderful and is even better for you than cows milk I've heard.
My daughter raised a Championship head of La Manchas (the ones with no ears) while she was in 4H. But she was willing to milk and feed them morning and night ALWAYS. Chevon (kids - young goats) meat is very good to eat, tastes great. At that time I tried to make cheese because we had so much milk. ONe goat is plenty for 1 person. But cheese making is an art as well as a science. My first effort could be bounced like a ball, and was as tough as a ball. I did finally make some edible cheese, bit I mostly made custards, etc.