Take the dog to a vet. Yes i know they look like pimples, however they may not be mere pimples, they may be a reaction to something in the environments, may be the initial stages of a skin rash, may be tumors - all of that needs to be checked FIRST before you assume pimple, pop it. Since there are so many things that it could be, a vet is the best way to go, one look and they most likely will know exactly what it is and have a treatment program already known to deal with it.

THE BUMPS ARE DOBERMAN ACNE. THE VET CAN GIVE YOU SOME ANTIBOTICS AND THEY WILL GO AWAY. VERY COMMON I WAS TOLD IN THE GERMANY LINE DOBES. MY FIRST DOBE I HAD IN 1990 HAD THIS PROBLEM IT WAS KID OF A MESS BECAUSE HE WOULD SCRATCH THEM OPEN AND THEY WOULD BLEED ON THE CARPET.

Vet

In most cases, acne develops during the pup’s teenage years. Adolescence for a pooch occurs between six and eighteen months of age. Acne also develops during this time; although, the development of acne normally occurs between five and eight months of age. As with humans, many dogs grow out of the skin condition; as they get older, the acne subsides. Some dogs, on the other hand, experience a lifelong fight with acne, and never outgrow the bothersome skin problem. You may be wondering how a dog can get acne. The causes of acne are still being researched. Many experts attribute it to food allergies, chemical allergies (plastic food bowls have been known to irritate the skin), or other skin problems. The way a pooch develops acne is very similar to how humans develop it. Pieces, or plugs, of sebum and keratin obstruct the hair follicles. Sebum is a substance that makes the hair oily, providing defense against bacteria. Keratin is a protein that makes up the hair and nails. When these two substances block the hair follicle, a blackhead occurs. These blackheads are most noticeable around the dog’s mouth, chin, and muzzle. Sometimes, the blockage may have a closer resemblance to a red pimple instead of a blackhead. Blackheads are normally not a problem unless they rupture and cause a secondary bacterial infection. If the dog appears to be uncomfortable and is constantly trying to scratch the area where the blackheads are located, then an infection may be developing. In cases like this, the dog needs to visit the veterinarian to get an antibiotic prescription. The antibiotic can fight against the infection. If your pet has acne, then you may want to seek the help of a veterinarian even if rupturing hasn’t occurred. The vet can often diagnose the problem by observing the skin, but sometimes a biopsy will be required. From the biopsy, the vet can determine if the dog is suffering from acne or from another skin problem. A visit to the vet can also rule out other causes, including allergies. In extreme cases, an acne medication may be prescribed to clear the problem. As mentioned before, if an infection is present, the vet will prescribe an antibiotic to clear the bacteria. The vet may also prescribe a topical treatment or steroid injection to reduce the itching and swelling caused by scabs. At home, there are products you can use to help rid your pooch of acne. But, if the acne isn’t bothersome to your dog, then rethink at-home treatment. The products you use may irritate the dog’s skin, causing an itchier problem for your pet. Ask your veterinarian for specific acne products. More than likely, he will suggest a shampoo or cleaning agent that contains benzoyl peroxide. The frequency in which you use the product should also be outlined by your veterinarian

Any time your dog has a problem you don't know how to fix, take him to the vet immediately. You need to have the 24 hour vet telephone number on the wall next to your phone.