Draft Animals 2. General Supplies 7. They are also weaker, more prone to straying, and require oats. They are more expensive than oxen but cheaper than horses. Likewise, they are weaker than oxen but stronger than horses.
Mules can be stubborn at times, but they are the best in extreme heat.
However, they are the cheapest and strongest, and they can survive on grass. There are important supplies you will need for your animals. For example, horses require oats. Oxen require ox yokes. You may want to take some spares of these items, to replace a broken item when it cannot be fixed.