What are the 5 meanest breed of dogs?

There is no definitive list of the meanest breed of dogs, as aggression can vary greatly within a breed and may be influenced by factors such as training and socialization. Here are some breeds that are often associated with assertive or protective traits, but it is important to remember that each dog is an individual and should not be judged based solely on its breed.

1. Rottweiler: Rottweilers are robust and muscular dogs known for their loyalty and protectiveness. They can be assertive and have a strong prey drive if not properly socialized and trained.

2. German Shepherd: German Shepherds are intelligent and energetic dogs commonly used as working or military dogs. They can be protective and territorial but are generally friendly when well-trained and socialized.

3. Pitbull: Pitbulls are often misunderstood due to their history of being bred for dogfighting. However, with proper training and responsible ownership, they can be loving and affectionate companions.

4. Doberman Pinscher: Doberman Pinschers are sleek and powerful dogs known for their vigilance and alertness. They can be intense and protective if not provided with adequate socialization and training.

5. Bullmastiff: Bullmastiffs are large, powerful dogs with a sturdy build. They are loyal and protective companions, but their size and strength require careful socialization and training to prevent dominant or aggressive behavior.

Remember that individual temperament plays a crucial role in a dog's behavior. Providing your dog with appropriate socialization, training, and positive reinforcement will help ensure a well-behaved and friendly companion regardless of its breed.