according to my reading Dual sire litters in most species are rare due to the fact that the male produces so called "fighter sperms"..their job is to hunt for sperms of another male and attempt to destroy them before they can attempt to fertilize the egg!....which may explain why my son does NOT look like me...lol...perhaps my fighters were off drinking that day......this post sounds like I maybe drinking right now.....okay the first part of this nonsense post is true, I really did read about these so-called fighter sperms.......FB ----- Original Message ----- From: "Jackie Short-Nguyen" <marcatoshepherds@xxxxxxxxx> To: "Showgsd" <Showgsd-l@xxxxxxxxxxxxx> Sent: Friday, February 8, 2013 2:25:43 PM Subject: [ SHOWGSD-L ] Re: litter announcement-- dual sire litter *With 11, you did get two litters.* * * Not necessarily.  I've seen this happen before.  Large litter, dual sired, only one male's sperm made it. There are plenty of reasons for a dual sired litter.  A male is nearby that otherwise wouldn't be, standing at stud for a limited engagement but an equally nice male is available and may be getting on in age.  You want to use both.  The bitch is getting on in years and this may be her last litter, don't want to waste an opportunity. -- Jackie Short-Nguyen Marcato German Shepherds <http://www.marcatogermanshepherds.com/> ============================================================================ POST is Copyrighted 2012.  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. Each Author is responsible for the content of his/her post.  This group and its administrators are not responsible for the comments or opinions expressed in any post. 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  SUBSCRIPTION:http://showgsd.org/mail.html NATIONAL BLOG - http://gsdnational.blogspot.com/ ============================================================================ ============================================================================ POST is Copyrighted 2012. 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. Each Author is responsible for the content of his/her post. This group and its administrators are not responsible for the comments or opinions expressed in any post. 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 SUBSCRIPTION:http://showgsd.org/mail.html NATIONAL BLOG - http://gsdnational.blogspot.com/ ============================================================================