German Shepherd

German Shepherd, also known as the German Black Shell, is agile and suitable for various difficult working environments, and was used in World War II , German Shepherds were originally recruited by the German army as military dogs. This breed of dog is tall and powerful, and has a very strong working ability, so it is often represented as a search and rescue dog, a military dog, a police dog, a guide dog, and a shepherd dog. Appear.

Labrador Retriever

Labrador Retriever is a large dog breed that is suitable for the role of guide dog and police dog. It has strong working ability but is not aggressive towards humans. Therefore, together with the Golden Retriever and the Siberian Husky, they are known as the three non-aggressive dog breeds, and their IQ is also very high, ranking sixth in the world.

Golden Retriever

The Golden Retriever is also one of the more common domestic dogs. It has a strong working ability. The dog is very patient and easy to feed, but it needs regular exercise. .

Bloodhound

This breed of dog was bred as a hunting dog in Belgium in the past. It has an indomitable spirit and a super strong sense of smell, so its working ability is also relatively strong.