Fannin's sheep are native to North America, particularly in the southwestern United States and parts of Mexico. They inhabit high-altitude areas like mountains and rocky cliffs, where they can climb and find safety from predators. Fannin's sheep are medium-sized animals. Adult males, called rams, can weigh between 150 to 250 pounds, while adult females, known as ewes, are generally smaller. Both males and females have curved horns that can grow up to 30 inches long. Their fur is often a mix of brown, gray, and white, allowing them to blend into their rocky surroundings. These sheep are well adapted to their rugged mountain homes. Their hooves are sturdy and rough, providing an excellent grip on rocky terrain and enabling them to navigate steep slopes with ease. Their acute sense of sight helps them detect danger from far distances.

Fannin's sheep are herbivores with a diet primarily consisting of plants found in their mountain habitats. They graze on grasses, shrubs, and other vegetation to get the nutrients they need. 

Female Fannin's sheep give birth to one lamb, occasionally two, after a gestation period of about 6 months. The lambs are born in the spring or early summer and quickly learn climbing skills from their mothers. These sheep are most active