Colour Mutations
It appears that in Japan and other places either a grey (g) or chinchilla (cch) mutation has appeared. This fat-tailed gerbil is greyer in colour. But not everyone is sure that it is a colour mutation. It is also possible that these grey fat-tailed gerbils are from the Egyptian subspecies Pachyuromys duprasi natronensis. The juvenile coat of these gerbils is very grey but faded with age to a much more sandy colour. Some hybrids of the Egyptian and the Algerian subspecies have this grey coat as well, although it does lighten with age but is still greyish. Nothing else is known at this time.
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