It is self explanatory. They are stock that is live. They give us our stock. They give us money and food. For example cows give us milk and beef infinitely and you can sell this or eat it. The same goes for chickens they can infinitely give you eggs and they also provide meat. Goats give milk and meat. Horses give transportation and pigs are a huge source of meat and fat. Sheep provide wool and meat wool is used to make all sorts of things such as clothing furniture rugs
