Who can imagine the elegant Great Dane of our days attacking a bore? Fortunately this hunting task is no longer for this great German molossers, and enjoys life as a good guardian, company dog and show dog. 
The fabulous dog known as the Apollo of dogs for its great size, the Great Dane, measures 81 cm (preferably) to the withers, the female 5 cm less; the male should not be less than 76 cm, the female no less than 71 cm, according to the FCI no less than 80 cm and 72 cm, respectively. As long as the dog is well proportionate and conserves the type, larger are preferred. The Great Dane’s head is rectangular, long and chiseled with finesse with a well pronounced stop. The eyes are medium sized, deep inserted; the ears, high inserted, medium sized, cropped or dropping (cropped ears should be evenly erect). The neck is firm and well arched; the withers descend to the short and straight back; the chest is well developed; deep and wide; the thorax is extended towards the elbow; the tail is inserted, narrowing, reaches to the hock (in excitement or movement, the tail curves slightly). The limbs ease amplitude and impulse during movement. The coat is short, thick and shiny. The Great Dane can be brindle, fawn (with a black mask), blue, black or harlequin (with diluted black spots).

Blue Great Dane puppies: one of the admitted colors in the breed. 
The Great Dane is a great dog… a very large dog. Although it is not aware of how large it really is, it is surprisingly kind and light. Most owners assure that the Great Dane can even live in an apartment. Fortunately it has a very balanced and non aggressive character, although on professional hands it can be trained for defense. In addition it is very affectionate and really loves children (which might believe it is a pony). The Great Dane is a happy and easy dog: just watch it wagging the tail (and remove anything fragile from the coffee table). For its good physical and psychic health, regular exercise is essential.
The dropping natural ears give this breed a softer and more benign look. 
The newborn Great Dane weighs between 340 and 680 g. Weaning usually happens at five or six weeks. After eight weeks, weigh should be between 10 and 12.5 kg. It has a fast growth period between the fourth and tenth month. High quality food should be provided but with a moderate protein content. Don’t be tempted to feed it supplements to help growth, since by itself it is fast, and only risks having more growth and bone problems. Of course it is advisable to provide a diet prescribed by the breeder or veterinarian. Excess feeding can lead to stress problems during growth. Breeders recommend regular veterinarian controls during this period to help channel the dog’s growth. Dentition change begins at about two months and can affect ear carriage. Avoid calcium supplements. The Great Dane reaches physical maturity at around two years.
Despite its great size, the healthy Great Dane requires little specific care.
Hair and ear care is minimal. A Great Dane requires a fenced yard and good diet, but with its good disposition it settles with quiet daily walks and is easy to train. Hypertrophic osteodistrophy can affect four month puppies, during its fast growth period. Heart problems can affect three or four year specimens. The Wobbler syndrome can affect the Great Dane’s nervous system between 3 and 18 months. Hypothyroidism is another risk. Harlequins can be prone to deafness. The possible buyer is obliged to research the breed thoroughly before acquiring a puppy. Talk to the breeders and owners; also talk with your veterinarian. The Great Dane is not long-lived, although this is variable; between five and ten years. Breeders inform about specimens that have reached 14. A Great Dane over four years old requires a special diet, which should be adapted as it grows older.
Due to the puppy’s strong growth period, breeders mostly advise a low protein quality diet. Overfeeding and excess exercise affect a growing Great Dane puppy.
When choosing a Great Dane you should be prepared to accept that your dog will probably not live as many years as most breeds. The buyer will do well in researching and seeking the best parent litter with hereditary disease free certificates and where the ancestor longevity is known. 
Blue colored puppies, appear in some litters. Blues can suffer deafness and perhaps other problems related to the merle gen, potentially mortal.