Mastiffs, or Old English Mastiffs, are an ancient breed originally used by the British as dogs of war. Male Mastiffs should stand at least 30 inches at the shoulder. Female Mastiffs should stand at least 27.5 inches at the shoulder. Their relatively short coats come in apricot, brindle, and fawn. Though they are incredibly strong and brave when called upon to be, Mastiffs are generally laid-back, steady, and quiet dogs. Some Mastiffs, however, have been known either to be overly shy or overly aggressive to strangers and other animals. Early socialization and careful, constant, positive reinforcement are essential. Because of their prominent flews, Mastiffs are slobbers and droolers.

To learn how to rescue a Mastiff in need of a home or for breeder referrals from the Mastiff Club of America click here.

Potential Health Problems*

• Cataracts
• Cherry Eye
• Corneal Dystrophy
• Cranial Cruciate Ligament Rupture
• Diamond Eye (Combined Ectropion and Entropion)
• Distichiasis
• Ectropion
• Entropion
• Epilepsy
• Gastric Dilatation and Volvulus (Bloat)
• Hypothyroidism
• Mitral Valve Dysplasia
• Osteochondrosis
• Panosteitis
• Persistent Pupillary Membranes
• Progressive Retinal Atrophy
• Pulmonic Stenosis
• Puppy Acne
• Urolithiasis

*Just because a condition is associated with a specific breed does not mean that all dogs of this breed will be affected. Likewise, a dog may be impacted by diseases and conditions not listed under his or her breed.