The proper way to cut up a cow?

There is no such thing as a "proper" way to cut up a cow, unless you are talking about the specific industry standards for butchering beef cattle. If you are asking how to cut up a cow for personal use, then the answer is that there are many different ways to do so, depending on your preferences and the size of the cow. Some common methods include:

- Quartering: This is the simplest way to cut up a cow, and involves dividing the animal into four equal parts along the spine and belly.

- Halving: This is similar to quartering, but involves dividing the cow into two equal parts along the spine.

- Thirding: This involves dividing the cow into three equal parts along the spine and belly.

- Sixthing: This involves dividing the cow into six equal parts along the spine and belly.

Once the cow has been divided into the desired number of parts, it can then be further cut up into smaller pieces, such as steaks, roasts, and ground beef. The specific cuts of meat that you will get from a cow will vary depending on the method of cutting that you use.