Since goats are herd animals, you need to have at least two, and with two standard dairy goats of decent breeding, you’ll have far, far more milk than you can use. You’ll also be paying to feed those two large goats so they can produce that overabundance of milk. You’ll need more housing. You’ll also need more strength for those times when you and the goat disagree, such as when you’re trying to medicate her. If you want to transport a Mini LaMancha, you can put her into a large dog crate that will still fit in your car. If you want to transport a standard dairy goat, you’ll need a truck, a trailer, or a tolerance for goat poop in your vehicle.