The life expectancy of boxers is not great, they rarely live up to even 10 years of age, but with proper care, although very rarely, they can live up to 15 years.
It is difficult to imagine a more suitable large dog for a family living in the city because the German boxer really gets along well with small children, other animals, but at the same time also has a pronounced guardian “talent”.
If ordinary dogs mature by about three years old, then a German boxer even at six or seven years old will be a “child”.