Silver agouti
Silver agouti bred by Ophélie Hedin
A silver agouti is a golden agouti (A) with two copies of the chinchilla gene (c^ch), which dilutes the red pigment to virtually white. The variety was standardised in 1969 (attributed to Brian Makin) and should have a clear bright silvery colour with no hint of brown.
The silver agouti is not a hugely popular variety, though some breeders have had success with them in the past. To create the silver agouti from scratch, you would need an agouti and a variety of mouse made using c^ch such as chinchilla or silver fox. If you mate an agouti and a chinchilla together you will produce agouti tans, which you should then breed together to (hopefully) get silver agouti.
Since the chinchilla was standardised in 1933, I have no idea why it took so long to establish a standard for the silver agouti - some 36 years!
The silver agouti is not a hugely popular variety, though some breeders have had success with them in the past. To create the silver agouti from scratch, you would need an agouti and a variety of mouse made using c^ch such as chinchilla or silver fox. If you mate an agouti and a chinchilla together you will produce agouti tans, which you should then breed together to (hopefully) get silver agouti.
Since the chinchilla was standardised in 1933, I have no idea why it took so long to establish a standard for the silver agouti - some 36 years!