Related Clues:

• Yaks
• The yoke's on them
• See 1-Across
• Farm team
• Plow pullers
• They can take a yoke
• Epitome of 41-Across
• Plow animals
• They have pull
• League member
• Pre-tractor farmer's need
• Conestoga haulers
• Hawks or Seahawks, e.g.
• Jets, e.g.
• Big bovines