Most large breeds descended from working or herding dogs.Larger dogs require more training, space, and companionship.
Tibetan Mastiffs are kind with their humans despite their lion-like appearance. The dogs were raised to defend Himalayan residents and their herds from all attackers.
The breed is still a fierce watchdog and protector but also enjoys lounging with family. Tibetans, medium-energy dogs, need mental and physical stimulation to stay happy, healthy, and interested.
Canadian fishermen developed Newfies to be 28 inches tall and 150 pounds. They're lovely, family-friendly dogs that can protect if needed.
With webbed feet, Newfies are natural swimmers. Newfies drool; don't trust breeders.
Cane Corso means "dog protector" in Latin and was bred to hunt wild boar. This breed is a ferocious guardian and superb family watchdog.
The agile, clever, affectionate, and loyal Corso may run roughshod over any owner without adequate training.