Why is cattle that kind of resource?

Please provide me with more context! "Cattle" is a very broad term. To understand what kind of resource cattle are, I need more information. For example:

* What are you trying to understand about cattle? Are you curious about their economic value? Their ecological impact? Their role in human societies?

* What kind of resource are you looking for? Are you interested in cattle as a food source, a source of materials, a source of labor, or something else entirely?

Once you provide me with more details, I can give you a more specific and helpful answer!