The Spanish Mastiff possesses several key physical characteristics and health details. Its life expectancy is 10–12 years. Males typically weigh 90–100 kg and stand a minimum of 77 cm (preferably over 80 cm) tall. Females weigh 70–85 kg and are a minimum of 72 cm (preferably over 75 cm) tall. They are adapted to cold conditions but sensitive to heat, requiring shade and cold water in hot weather. Their energy level is high. The breed has a thick, dense, straight coat in varied colors (white, black, brown, gray, yellow, red, and mixtures). Hereditary diseases include hip and elbow dysplasia, heart problems, and obesity.