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US High White test (2008)

Tag: extreme white, high white

In 2008, I attempted a breeding trial to figure out whether the US "High White" gerbils were caused by the same mutation as European Extreme Whites.

At the time, high whites and high white "carriers" (White Paws mimics) were not present in my area.  I had the opportunity to attend the AGS New England Show that year, and picked up two WP-mimics.

From ABC Gerbils, I recieved "Spot": a Black male with white headspot, extended white bib, white flecking in the coat, and a scattering of clear nails (both front and rear).  Spot was just under two years old at the time.

I also brought home Spot's High White litter-brother, "Explosion" (aka "Boom"), under the terms that he not be bred.  Boom had a pronounced head-tilt, and a small growth on his chin that was removed shortly after adoption.

Their breeder wrote a short article on High Whites in the AGS Gerbil Tales newsletter-- the two males pictured are the ones I got.

From StoryBooks Gerbils, I recieved "Bikini": a Black female with an extensive bib, white ventral spot, and all or nearly-all clear nails.  Bikini's mother was a very similar phenotype, found in a pet store.

Spot and Bikini had one litter: two Black females, one Black male, one Lilac male, and one Sapphire male-- all healthy. 


All five pups had white headspots of varying sizes, and the Black pups had ventral spots and white markings into the nailbed on front and rear paws (difficult to tell with the non-black pups).

Black F #1:

Black F #2:

Black M:

Sapphire M:

Lilac M:



Sapphire M:


Unfortunately, the latter part of 2008 was very Not Good for me personally.  In the end, Spot passed away, Bikini never had their second litter, and the five pups were adopted with the understanding that they would not be bred.

I later found out that the Black male pup had been bred with a Pied Agouti female. 

(not my picture)

Two pups were born, one survived (I believe the other was small/weak, and died early on).  The mother died 13 days after delivery (cause unknown), and the remaining pup was hand-reared.  That pup was a Mottled (High White?) Agouti female; I do not know if she was bred.

(not my picture) (not my picture)

So basically, results were inconclusive.  I did not see and RumpBlacks, but I had nowhere near enough data to rule out the possibility.