How big is a Great Dane really? When is a Dane full grown?
According to the AKC standard the male Great Dane should not be less than 30 inches at the shoulder and is preferable that he be 32 inches or more. The female should not be less than 28 inches and is preferable to be 30 inches or more. From what I have seen in the show ring a very correct male of 34 inches can win but most people like larger dogs (a height of 36 inches is an advertising point in the breed magazines). How long it takes a Great Dane to become full grown depends on the breeding with some pedigree lines maturing at about 1 year of age for females and some (many) not maturing until 3 years for males. Full height is often achieved by 18-24 months and weight/musculature by 3 years. The “puppyhood” of a Great Dane usually lasts at least 18 months. They usually settle down from frantic puppy activity levels about 9 months to 1 year and are mentally mature (out of adolescense) between 18 – 28 months. The size of a Great Dane is a two edged sword.