Another ID thread

[Michelle.C]

High White is a misleading term. SOX10 Dominant White Spotting, the one responsible for Megacolon can look English, Berkshire, etc. That said, there are several genetics associated with safe markings.

One is Variegated, you see Capped, Notched Capped, Variberk, Berkshire, Irish, BEW/REW, Masked Patched, etc. Another is Dalmatian which is also a Variegated line, but the markings are a bit different. They don't look like a traditional Dalmatian (you see better Dalmatians in Variegated H(e) lines, imo. Then you have Recessive Blazing which is also safe. Essex is lethal dominant (also not in the US), but it is not MC associated either. So, really, there is only one marking gene associated with MC (SOX10 Dom). Unfortunately, it's quite common in the pet trade. Markings can mimic that of Variegated, Recessive Blazing, etc. but it also has an exclusive marking associated with it (Split Cap/Stripe and Split Cap).

It's almost impossible to tell which you have, although there can be indicators, unless you breed it out (test breed) or if you have Split Cap/Stripe. It's usually best to stay away from undocumented marking lines though. As Megacolon is quite devastating to have to deal with.

He looks like an Agouti Wedge Blazed Variberk, by the way. Keep in mind, that is only the phenotype as (again) it can be very hard to identify genotype.