There are several breeds of dogs that are considered particularly strong, both in terms of physical strength and work ability. Below is a list of some of the most powerful breeds:

1. Rottweiler
Characteristics: This is a very strong dog, with developed muscles. They are very loyal and do an excellent job as guard dogs.
Uses: working dogs, guard dogs, and therapy dogs.
2. Mastiff
Characteristics: Mastiffs are very heavy and strong dogs, with the ability to defend their territories.
Uses: guard dogs, fighting dogs, and sometimes as therapy dogs.

3. Gordon Retriever
Characteristics: This breed is considered very strong, with the ability to swim and retrieve things from the water.
Uses: hunting dogs, service dogs, and therapy dogs.
4. Doberman Pinscher
Characteristics: Dobermans are smart, agile and strong dogs, often used as guard dogs.
Uses: guard dogs, working dogs, and service dogs.
5. Bully Kutta
Characteristics: Baldiopes are very large and strong dogs, with great power.
Uses: guard dogs and fighting dogs in the tradition.

6. St. Bernard
Characteristics: Known for their height and weight, Saint Bernards are extremely strong dogs, with great endurance.
Uses: rescue dogs in frozen areas.
7. Shiba Inu
Characteristics: This breed is smaller but with great power, known to be strong in their structure.
Uses: companion dogs, and therapy dogs.
8. Chow Chow
Characteristics: Dogs with special physical strength, known for their independent character and strength.
Uses: guard dogs and companion dogs.

9. Airedale Terrier
Features: The largest dog in the terrier family, weighing 20 to 30 kilograms.
Character: smart, loyal and independent.
10. Boxer
Characteristics: strong and muscular body, weight of 25 to 32 kilograms.
Character: active, friendly and love children.
11. Canadian Eskimo
Features: extremely durable dogs, their weight ranges from 25 to 40 kilograms.
Character: Loyal, work well in groups.

12. Shepard Kennedy
Features: strong and independent, weight of 20 to 30 kilograms.
Character: intelligent and loyal.
Summary
This list features a variety of other powerful dog breeds, each offering different traits and diverse personalities. When in the process of choosing a dog, it is important to consider the needs of the breed and make sure that the dog is well trained and treated to ensure a happy and stable life.