The Presa Canario is a strong and powerful breed, originally bred for working with livestock and guarding property. While they can be devoted and protective companions, there have been cases where these dogs have been involved in attacks. Understanding their background, temperament, and proper training is key to preventing such incidents.
History of the Presa Canario
This breed comes from the Canary Islands, where they were developed in the 15th and 16th centuries. Farmers used them to handle cattle and protect their land. Over time, their strength and fearlessness made them popular in dog fights, which influenced their behavior.
Today, with proper training, a Presa Canario can be a loving pet. However, their history means they need responsible handling to ensure they grow into well-mannered dogs.
The Importance of Training and Socialization
Training and socialization are essential for any dog, but they are especially important for a strong and dominant breed like the Presa Canario. If not trained properly, their protective nature can turn into aggression.
Why Early Training Matters
- Puppies need to be exposed to different people, animals, and environments early on.
- Teaching them commands like sit, stay, and leave it helps them understand boundaries.
- Training with positive reinforcement (like treats and praise) builds trust and strengthens your bond.
If a Presa Canario is raised with patience and firm guidance, they can become obedient and social pets. However, if they are neglected or trained harshly, they may develop territorial and aggressive behavior.

(Presa Canario with cropped ears)
Physical Characteristics
The Presa Canario is a large and muscular breed.
- Males weigh between 100 to 160 pounds.
- Females are slightly smaller but still strong and powerful.
- They have a broad head, strong jaws, and often cropped ears, giving them an alert and imposing look.
Because of their size and strength, some areas have banned or placed restrictions on owning this breed. People considering getting a Presa Canario must understand the legal responsibilities involved.

(Presa Canario body)
Temperament and Behavior
The way a Presa Canario behaves depends a lot on how they are raised.
- When trained properly, they can be loyal, calm, and affectionate.
- Without proper socialization, they may become territorial and aggressive towards strangers or other animals.
- They have a strong protective instinct, which makes them excellent guard dogs but can also lead to attacks if not controlled.
A well-trained Presa Canario will know when to be alert and protective and when to be calm and friendly. The key is consistent training and responsible ownership.
Cases of Presa Canario Attacks
While Presa Canarios can be loving pets, there have been several serious attacks involving this breed.
The Case of Diane Whipple
In San Francisco, a lacrosse coach named Diane Whipple was fatally attacked by two Presa Canario dogs in her apartment building.
- The dogs belonged to attorneys Marjorie Knoller and Robert Noel, who got them from a prison inmate involved in dog breeding.
- The owners were found guilty of negligence, as they failed to control their dogs properly.
- This case gained national attention and raised concerns about the dangers of powerful breeds.

(Diane whipple got attacked by two presa canario)
Attack in Florida
Another case happened in Florida, where a woman named Shawna Willey was mauled by her 120-pound Presa Canario while giving it a bath.
- This attack shows how strong-willed these dogs can be.
- It highlights the importance of proper handling and training.
Laws and Breed Restrictions
Due to the risks associated with Presa Canarios, some areas have laws that restrict ownership.
- In Queensland, Australia, this breed is on a list of dogs with strict legal regulations.
- Owners in some places must follow specific rules, such as keeping them on a leash at all times and ensuring they have proper enclosures.
- If a dog causes serious injury or death, the owner may face up to three years in prison and fines of up to $108,000.
Are Breed Bans Effective?
Some experts argue that banning certain breeds is not the solution. Instead, they suggest:
- Stricter rules for all dog owners, regardless of breed.
- Encouraging training and socialization to prevent aggression.
- Focusing on irresponsible ownership rather than banning specific dogs.
Being a Responsible Presa Canario Owner
If you are thinking about getting a Presa Canario, you need to be prepared for the responsibility.
Essential Steps for Safe Ownership
- Proper Training – Start early and use positive reinforcement methods.
- Early Socialization – Introduce them to different places, people, and animals.
- Supervision – Never leave them alone in public or in situations where they might feel threatened.
- Secure Your Property – Have a strong fence to prevent them from escaping.
- Regular Vet Visits – Keep up with health checks and address any behavior concerns early.
Final Thoughts: Are Presa Canarios Dangerous?
The Presa Canario is a breed with a strong protective instinct and requires responsible ownership. While they can be loving and loyal companions, their size and strength mean they must be properly trained to prevent dangerous situations.
If you are considering getting a Presa Canario, remember:
✅ Training and socialization are a must.
✅ Know your local laws and restrictions.
✅ be prepared for the responsibility that comes with owning a powerful breed.
With the right care and training, a Presa Canario can be a well-behaved and affectionate pet. However, neglect and improper handling can lead to serious consequences. Always approach ownership with knowledge and responsibility to ensure safety for both the dog and the community.