Wikipedia lists these common pack animals
- Water buffaloes
- Equines including horses, donkeys, and mules
- Dogs (packing and sledding should have different values)
Each animal has a weight it can carry normally described as a percent of its body weight, and food requirement that can also be described as a percent of its body weight. An animal who is carrying only its own food reaches a limit, where it can only trekk so many days.
Several years ago I found a list that showed these values, and described it better then I have here. But my google skills are failing me on this.