I was always told it was too and from the research I have done, it appears to be. It is not a simple recessive, which can make it hard to figure, but certain lines do produce it. I have 2 males that did not produce it in multiple large litters when bred to bitches who had previously produced it. Which leads to the question....does it have to be on both sides for a puppy to be affected. I was told that it had to be...but I can't find a definitive answer. Tough thing to know is...in the litters that had it, are the siblings carriers???? I would tend to think they can be. I had it once w/ a co-owned bitch bred to outside lines...heartbreaking....and since then I have done my best to avoid breeding a bitch or to a dog who came from a litter that had mega issues. Maybe that's too cautious on my part but so be it. Sorry you are going through this. Kathy, member GSDCA, DVGSDC Celebrating generations of Dual Titled TC'd Champions visit _http://www.pinehillgsds.com/_ (http://www.pinehillgsds.com/) In a message dated 6/26/2010 7:07:43 P.M. Eastern Standard Time, brittaleahnasa@xxxxxxxxx writes: According to what I have read congential megaesophagus is hereditary http://pets.webmd.com/dogs/dog-enlarged-esophagus-megaesophagus I would like to know the answer to this since I just got dealing with this myself with several puppies, and it is devestating since this is something I have never had beforein my 10 years of breeding. Ann Marie www.amarigsd.com Home of Ch Fairway's Leah v Nadelwald TC ROM OFA Ch Amari's Beware of Foxy Roxy CGC TC OFA Amari's Elizabeth Taylor (Major pointed/Best in Show Bred-By winner) Breeder/Owner of R/Best in Futurity Ch Amari's Ava Gardner TC OFA Ch Amari's Bandit of Broadcreek OFA (Multiple Group Placer) Amari's Blissfull Jazz CGC TDI (Major pointed) Amari's Cinderella von Hornberger (Ch pointed) Amari's Chances Are (Ch pointed) Amari's Ella Enchanted (Ch pointed @ 7 months/Major Reserve @ 11 months) --- On Sat, 6/26/10, Kathy Partch <jokaysedona@xxxxxxxxxxxxx> wrote: From: Kathy Partch <jokaysedona@xxxxxxxxxxxxx> Subject: [ SHOWGSD-L ] Re: Megaesphagus....NOT hereditary? To: showgsd-l@xxxxxxxxxxxxx Date: Saturday, June 26, 2010, 6:51 PM Ed, being that Megaesphagus has not been confirmed as hereditary -- I've been told many times over that it is polygenic in our dogs. There's always so much to ask of our puppies. Nothing is perfect. But we pray they are as close as possible. Kathy Partch Sent: Saturday, June 26, 2010 3:19 PM Subject: [ SHOWGSD-L ] Megaesphagus....NOT hereditary? Having had this problem every now and again, a friend called me today and stated all but one of her pups had been diagnosed ( barium ex-ray) with the condition...I was always under the impression that the condition was hereditary....well after reading about it , most of my reading sources stated that it was congenital, and to be more specific, idiopathic congenital....which basically means the reasons for acquiring the disease are unknown!...well is this good or bad news?....if it's not genetic, it's not predictable.....comments , answers , questions?...I'll tell you this :every time I have a litter, and over the past few years I have had very few, I'm always looking for pups throwing up food.....not a fun disease...Ed ===========================================================================P OST is Copyrighted 2010. 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NO REPRODUCTIONS or FORWARDS of any kind are permitted without prior permission of the original author AND of the Showgsd-l Management. ALL RIGHTS RESERVED. ALL PERSONS ARE ON NOTICE THAT THE FORWARDING, REPRODUCTION OR USE IN ANY MANNER OF ANY MATERIAL WHICH APPEARS ON SHOWGSD-L WITHOUT THE EXPRESS PERMISSION OF ALL PARTIES TO THE POST AND THE LIST MANAGEMENT IS EXPRESSLY FORBIDDEN, AND IS A VIOLATION OF LAW. VIOLATORS OF THIS PROHIBITION WILL BE PROSECUTED. For assistance, please contact the List Management at admin@xxxxxxxxxxx VISIT OUR WEBSITE - http://showgsd.org NATIONAL BLOG - http://gsdnational.blogspot.com/ =========================================================================== ============================================================================ POST is Copyrighted 2010. All material remains the property of the original author and of GSD Communication, Inc. NO REPRODUCTIONS or FORWARDS of any kind are permitted without prior permission of the original author AND of the Showgsd-l Management. ALL RIGHTS RESERVED. ALL PERSONS ARE ON NOTICE THAT THE FORWARDING, REPRODUCTION OR USE IN ANY MANNER OF ANY MATERIAL WHICH APPEARS ON SHOWGSD-L WITHOUT THE EXPRESS PERMISSION OF ALL PARTIES TO THE POST AND THE LIST MANAGEMENT IS EXPRESSLY FORBIDDEN, AND IS A VIOLATION OF LAW. VIOLATORS OF THIS PROHIBITION WILL BE PROSECUTED. For assistance, please contact the List Management at admin@xxxxxxxxxxx VISIT OUR WEBSITE - http://showgsd.org NATIONAL BLOG - http://gsdnational.blogspot.com/ ============================================================================