The best animal to have 2000 years ago

If I lived 2000 years ago, I would rather own a cow rather than a horse or a dozen chickens because I can get more out of a cow than I could get out of the other two. Besides, having a horse takes a lot more maintenance than a cow and chicks are very clamorous and irritating. Having a cow would be the best option because I could get dairy products out of it such as milk to eat with other foods and put in foods that may need it, I could produce yogurt and cheese also. I can breed my cow with one of my neighbors cows to make baby cows that will eventually grow an develop to be useful to my family. I would breed the cows until there is a plentiful of them so they wont dye out. I could then take the oldest cows and use their skins for warmth and clothing and get meats from them. I would get steak, ground beef, beef jerky, and more.