What category does the cow fit into?

The cow fits into the category of mammals. Mammals are a class of animals that are characterized by the presence of mammary glands, which produce milk for feeding their young. Other features that are characteristic of mammals include the presence of hair or fur, the ability to give birth to live young, and the possession of a diaphragm, which is a sheet of muscle that separates the chest cavity from the abdominal cavity. Cows are mammals that belong to the order Artiodactyla, which includes even-toed ungulates such as pigs, deer, and sheep.