Is this possible?

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by Rugers Guru on 13 March 2010 - 19:03

http://www.pedigreedatabase.com/gsd/classifieds/97090.html

by Red Sable on 13 March 2010 - 22:03

The Littlest Hobo had that mask, and he always looked like a cross to me.

Not my cup of tea.

by melba on 14 March 2010 - 16:03

My girl Haley has produced a few puppies with the reverse mask, but not to this extreme.

I wish I had some better pictures, but he has retained the markings as he has grown.

Melissa

by Delilah on 14 March 2010 - 17:03

Yes it is. Here is one of my pups

I belive this ad was put up by the smae person who contacted me to see if i had any other revers mask...

by Sunsilver on 14 March 2010 - 23:03

Yes, it's possible. I also thought the Hobo dogs were mixes, but apparently that's not true. I've read Eisenman's books, and he talks about breeding to a bitch down in California. Another poster on the database used to work for a GSD kennel in Ontario which also produced some of the Hobo dogs.

The Hobo bloodlines were also incorporated into the Shiloh shepherd, so the mask will occasionally pop up in this breed, too, though there is some giant malemute in the Shiloh genepool which could also be responsible for producing the mask.

by Elkoorr on 14 March 2010 - 23:03

Yes, it is possible. My last dog in Germany had a reverse mask and was purebred GSD of east german lines. Excuse the whitish coloration, it was scanned. It was more of a creamy mustard yellow.

by Kimmelot on 15 March 2010 - 00:03

This is LFR Anna Bannana's She had a wild mask , I thought this was concidered Bi-color. Her father had white in his background ( Not my idea to buy him) Her Eyes where very dark amber, but her contrast color was cream.. she is the sweetest dog ever..

by eichenluft on 16 March 2010 - 05:03

The Hobo dog - at least the original one - was a stray - unknown pedigree. Most likely a husky mix. In fact articles have claimed the dogs are various northern breeds, guessing the mixes as wolf dogs or hybrids of some sort -

Although widely referred to as German Shepherds, the dogs do not have the coloration or markings which are recognized for that breed's standard. Currently this breed is called a "Tamaskan", but no country has accepted the Tamaskan as a registered breed. Their coloration and markings more closely resemble specimens of the Northern Inuit Dog which was created by combining several dog breeds, they also closely resemble wolfdog hybrids such as the Saarlooswolfhond or the Czechoslovakian Wolfdog. Similar looking dogs were selected to play the role of the Littlest Hobo, however little information is available about the process to breed them and whether Chuck bred the dogs himself[

by jc.carroll on 17 March 2010 - 16:03

It is possible. In simple terms, different areas of the dog are under different genetic controls for pigmentation, so you get variences in masks, mantles, saddles, and so on. It's located on the E-locus, and can fluxtuate in amount of extension (area coverage) of pigment in many breeds, German sheperds are one of them.

In technical terms:
The mechanism by which a black mask is formed is an interaction between the MC1R or E gene with the agouti protein and melanocyte stimulating hormone. The EM allele allows agouti to bind some of the time and cause fawn pigment to be made on the body and the melanocyte stimulating hormone to bind on the face instead. Because of this any phaeomelanin pigmented dog (i.e. yellow, fawn, red, cream) with a mask, must be so colored due to an agouti genotype. Such dogs can not be "e/e" at MC1R because an Em allele is required for the production of a melanistic mask. This further confirms that dogs in breeds where mask is part of the standard such as Bullmastiffs and Boxers, the reddish coat colors are due to the agouti alleles and not an e/e genotype at MC1R.

Since the mask is inherited as a dominant trait, a dog could be heterozygous or homozygous for mask. The extent of the mask or depth of color do not seem to be affected by the number of copies of Em. Melanin pigment can be black, grey or brown and therefore the term "melanistic" mask includes all these types of masks.

Additional Info
http://homepage.usask.ca/~schmutz/alleles.html

by Journeyk9 on 30 March 2010 - 12:03

Elkoorr,

Where did you get your male from? Do you have pictures of him as a pup?

I would be very interested in getting a dog with his conformation, and reverse mask. It would be awesome to find one from east german lines, with the reverse mask. Did you breed him at all at any point? I would be curious as to what he produced.

Thank you for your time.

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