Winter White Dwarf Hamster Colors and Genetics

Agouti Colors

Agouti colors have a dorsal stripe and banded hair shafts, and are not Pearl or Golden.

Normal
++
The wild color. Brownish-gray back with dark ticking, a dark dorsal stripe, and an off-white belly. The eyes are black and the ears are dark gray.
Campbell's equivalent: Normal (++)

Sapphire
ss
Soft blue-gray back with a darker gray dorsal stripe and off-white belly. The eyes are black and the ears are gray.
Campbell's equivalent: similar to Opal (dd)

Violet
ss bb
Pale, dull beige with a lilac cast and a blue-gray undercoat. The eyes are black and the ears are gray.
Campbell's equivalent: Lilac Fawn (bb dd)

Argente Black Eye
bb
Warm cream to ginger with brown tipping and a dark brown undercoat. The eyes are black and the ears are pink.
Campbell's equivalent: Black Eyed Argente (bb)

Blue Argente
ss pp
Soft ginger-orange with a blue tint and blue-gray undercoat. The eyes are red and the ears are pink.
Campbell's equivalent: Blue Fawn (dd pp)

Cream Argente
bb pp
Pale, dull cream-beige with a brownish stripe. The eyes are red and the ears are pinkish.
Campbell's equivalent: Beige (bb pp)

Violet Red Eye
ss bb pp
Soft beige-gray with a blue tint and gray undercoat. The eyes are red and the ears are pinkish-gray.
Campbell's equivalent: Blue Beige (bb dd pp)

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Golden Colors

Also sold as Mandarin or Pudding. Golden fades with age, so adults are often paler than they were as pups.

Golden
Go-
Bright golden-orange with a slightly darker stripe and a pale belly. The eyes are black and the ears are gray.
Campbell's equivalent: none

Golden Sapphire
Go- ss
Golden washed out with gray, giving a muted beige-gray coat with a grayish stripe. The eyes are black.
Campbell's equivalent: none

Golden White Eared
Go- bb
Pale golden-cream. The eyes are black and the ears are pink.
Campbell's equivalent: none

Golden Red Eye
Go- pp
Pale golden apricot that fades toward cream with age. The eyes are red and the ears are pink.
Campbell's equivalent: none

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Pearl Patterns

Pearl is dominant and cloaks the base color. Only breeding tells you what's underneath.

Pearl
Pe-
White coat with gray ticking or a darker stripe showing through. The eyes are black and the ears are gray to pink.
Campbell's equivalent: none

Pearl White Eared
Pe- bb
Nearly pure white with very little ticking. The eyes are black and the ears are pink.
Campbell's equivalent: none

Pearl Yellow Line
Pe- Go-
White with a yellow to orange stripe or patches where the golden underneath shows through. Many Golden Pearls show no yellow at all and look like plain Pearls.
Campbell's equivalent: none

Pearl Red Eye
Pe- pp
White with red eyes and pink ears. Can look almost identical to a Campbell's Red Eyed White or Albino.
Campbell's equivalent: none, but resembles REW (didi pp Si-)

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Breeding Notes

• Red eyes always mean Campbell's genes. Pure Winter Whites only come in black eyes.
• Homozygous Pearl (PePe): sources disagree on whether it's fully viable. Consistently small litters from Pearl × Pearl pairings may be a sign.
• Golden × Golden: breeders report poor fertility, so pairing a Golden to a non-Golden is the safer choice.
• Crossing in Campbell's: use a Campbell's female with a Winter White or mostly-Winter White male for first crosses. Hybrids are discouraged by most breeders!

Pearl Yellow Line "Flame Djungarian" 

Is Your Winter White Really a Winter White?

If you've bought a "Winter White" dwarf hamster from a pet store lately, there's a good chance you actually brought home a hybrid. I've been breeding Phodopus for over 30 years, and in that time I've watched pure Winter Whites (Phodopus sungorus) and pure Campbell's (Phodopus campbelli) get harder and harder to find. The two species cross easily, so the pet trade has mixed them for decades, and today most dwarfs on store shelves carry a little of both. That isn't a crisis, but it does matter if you care about health, temperament, or just knowing what's actually in your cage.

So which colors are pure? Surprisingly few. Winter Whites have only three well-established color genes: Agouti, Sapphire, and Pearl. That gives you Normal (the wild agouti color), Sapphire (a soft blue-gray), Pearl (white with a darker stripe or ticking), and Sapphire Pearl (Pearl sitting on top of a Sapphire base). If your hamster looks like one of those, it could be pure, though only a known pedigree can really tell you.

Then there are the ones people argue about. Marbled shows up on some lists of pure colors, while plenty of breeders suspect it came from hybrids. Mandarin (also sold as "pudding" or "golden") is the big one. It may have started as a genuine Winter White mutation, but somewhere along the way it got crossed into Campbell's Argentes, and the golden hamsters you see today are almost all hybrids.

Everything else points to Campbell's somewhere in the family tree. Argente, blue, yellow blue fawn, camel, brown, cream, merle, and umbrous are all colors strongly associated with hybrid crosses. The "Sunfire" hamsters showing up in stores now (what we used to call "Flame Djungarians" 15 years ago) fall squarely into this group.

Want a quick way to spot a hybrid? Look at the eyes. Pure Winter Whites have black eyes, period. A red-eyed "Winter White" is carrying the Campbell's Argente gene, no matter what the cage card says. (I say this with love, since my own current pair is a red-eyed hybrid line!)