By reading dog encyclopedias.
German Shepherds will be good with smaller breeds if they known that dog since early puppyhood.GSDs won't be good with smaller breeds if you stuck that smaller dog with him/her duing his/her adulthood
Justdogbreeds.com
Border Collies are probably the best. (They are the smartest dog)
The good dogs to have a pack with are Newfoundlands and Saint Bernards.
German Shephard,Alsetian and Dalmation
No. There are no breeds of dog that are inherently "good" or "bad." Responsible ownership and training of any breed of dog is the only way to guarantee a good dog.
it is believed to have 355 breeds of dog including mix breeds.
by being good at playing it
friendly dogs, like labradors and goldens
No dogs are completely hypo-allergenic, but some breeds that may help are the Papillon, Poodle, Maltese, Native American Indian Dog and Vizsla.
pugs they are sweet and playful and good watchdogs