A female horse is called a mare. The term mare is used to designate adult female horses and distinguishes them from males (stallions or geldings). Mares typically reach maturity around the age of three or four, and they can be bred to produce foals. The care and management of mares can vary based on their reproductive status, health, and intended purpose, whether for work, sport, or companionship. Understanding the role of mares is essential in equestrian disciplines, agricultural practices, and horse breeding programs, highlighting their importance in the horse industry.