True blue dogs are black coated breeds that are naturally lightened (or diluted) to a paler shade due to recessive gene mutations. Dilution can happen with almost any breed, although exceptionally rare with some. Some dogs that naturally appear dark grey or silver, or black dogs that fade over time, may not be considered blue (despite looking very similar) Some breeds literally have blue in their breed name. This might sound a little strange seeing as how some breeds have all the characteristics of blue described above. [Read More]