|Blue Campbells Dwarf Hamsters|
|Heavily Silvered Blue Male
(Same male as one to the left 5 months later)
|Blue Mottled and Silvered Mottled Sisters|
|Non Silvering Blue Mottled Female (with little mottling)|
|Blue (aadd) is the two-gene color which is the combination of the opal and black genes. Since both of these colors are recessive, the hamster must have two copies of both of these genes to appear blue. It is not difficult to breed blues if you have both an opal and a black hamster -- but you must have both genes. To get blues, you would breed the opal to the black. All babies would be normal carrying opal and black. You would then breed two of these normals together. From this pairing, you should get approximately 9/16 normals, 3/16 opals, 3/16 blacks, and 1/16 blues. (It is a bit trickier but still doable if you start with animals who only carry these genes.)
Due to the silvering nature of the black gene, all blues will silver. Some silver early while others silver later in life. Also due to the black gene, all blues are self. Self colored hamsters are the same color all over (belly and back) with no scallops on the side. Most also have white paws and a chin stripe while some have white patches on their bellies too.