The average life span of a Newfoundland dog is about ten years. In fact, the Newfoundland dog has a good temper and can match the golden retriever. It can help people do many things, whether it is a working dog or a family dog, it can complete daily tasks well.

It has strong limbs, abundant lung function, and a thick layer of hair that resists the coldness of the sea. This advantage allows it to persevere in the water for a long time. Therefore, it was even awarded the title of "Authoritative Expert on Maritime Rescue". The average life span of the Great Dane is about eight years. Just by name, you can tell that it is a dog breed with a very large body size, generally reaching more than 70 cm and rest weight above 45KG. The Great Dane has a relatively developed and majestic body, which is easy to train. It can cultivate security dogs with strong work ability and obey arrangements, which is quite threatening. But his physical condition is relatively poor and he is very prone to illness.

The average life span of a Spanish wolfhound is about six years. If you can call it a wolfhound, you can also understand its combat ability. It has a very good physique and the muscles in every part of the body are very developed. Its appearance is similar to that of greyhounds, and its coat is very messy. They are quite brave and their strong combat ability makes it difficult for them to worry about dealing with wolves. The average lifespan of the Bernese mountain dog is also about six years. The Bernese mountain dog is one of the only four species of mountain dogs left in France. In the early stage, in the BYD region of France, it was developed slowly by cargo, cheese production and loom shops. On the surface, this kind of dog is stupid, but in fact it has a high intelligence and has strong obedience. The only lack of physical fitness is insufficient and healthy.