What Is a Female Horse? Understanding Mares and Fillies

Learn the difference between mares and fillies, and their roles in horse breeding.

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A female horse is referred to as a mare if she is over four years old. If she is younger, she is called a filly. Mares and fillies play pivotal roles in horse breeding, ensuring the continuation and quality of equine lineages.

FAQs & Answers

  1. What is the difference between a mare and a filly? A mare is an adult female horse over four years old, while a filly is a young female horse that is under four years old.
  2. How do mares contribute to horse breeding? Mares play a vital role in horse breeding as they are essential for producing foals and maintaining equine bloodlines.
  3. At what age does a filly become a mare? A filly becomes a mare when she reaches four years of age.
  4. Why are mares important in equine lineages? Mares are crucial for sustaining the quality and continuation of equine lineages through breeding.