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interesting donkey and canine observation

I was optimizing the donkey page so the photos would load faster and this struck me. Look at how similar these markings are...' [img]http://colorgenetics.info/sites/default/files/Talleulah022a.jpg[/img] [img]http://colorgenetics.info/sites/default/files/750px-Shiba_Inu.jpg[/img] Makes me wonder if the genes causing this could be at the same locus.

Threnody Wed, 06/08/2011 - 08:54

I only know collie and sheltie color mechanisms but it looks like the Akita is sable? All the sable dogs I work with who have minimal white seem to have lighter underbellies. I *think* it might be caused by agouti and not by a separate gene like donkey pangare is.

Daylene Alford Wed, 06/08/2011 - 10:20

No, this is called Urajiro. It can affect both black and red based dogs and is most common in a few Asian breeds. It's inheritance is thought to be recessive. Here is a pic of a black and tan dog with it. [img]http://colorgenetics.info/sites/default…] Both of these dogs are Shibas Inu's which is a Japanese breed which is required to have these markings.

Threnody Wed, 06/08/2011 - 17:03

Cool. Learned something new. ^_^
Probably is a separate gene for these dogs then since agouti wouldn't show on a red base. Seems plausible that it could possibly be on the same locus as donkey pangare. Especially considering that donkey pangare can affect black and red.

rabbitsfizz Sat, 06/11/2011 - 05:16

Is it not the same pattern as Dobes/B&T Terriers/Manchester Terriers / Rottweillers et al??
Shiba Inus are the smallest of the Akitas, a very nice dog, loyal, fairly calm and a pretty good defense dog in spite of being smaller- I like them a lot more than I do the Japanese Spitz which is a similar size and, IME at least, a train wreck of a dog, yappy, sharp and not nice with kids!!

Daylene Alford Sat, 06/11/2011 - 06:44

What are you referring to in those breeds Rabbit? What I'm referring to is the lightening of the underside. This is not a white pattern but rather a modifier.