They use an old formula 2 litters per year producing 8 pups per litter with 1/2 girls first genreation: 1 bitch X 2 breedings = 16 puppies 1/2 female = 8 girls + mom for next generation Next generation : 9 bitches X 2 litters = [16 x 9 ] = 144 pups 1/2 girls = 72 bitches + 9 = 81 bitches Next generation; 81 x 2 litters = [16 x 81] = 1296 pups 1/2 female = 653 + 81 = 734 bitches Next generation: 734 x 2 litters = [16 x 734] ........... See how quickly it grows..... The numbers for cats are even more astronomical since queens can have 3 litters per year but usually only 6 kittens per litter calculated. What they don't take into consideration is that every bitch doesn't produce 8 pups per litter, 1/2 are not always girls, and most of these figure on a 7 year breeding span. the average life expectancy of an animal even in a feral supported colony is only two years so the numbers just don't jive. Many years ago a friend of mine taught a class called Lying with Statistics. It was a REAL eye opener..... Suzanne www.tsalishepherds.com Home of BIS/BISS Ch Yancy HIC HT PT RA CD TC CGC BH, Helios SchH3, Ch Flair, Tess [150 PLUS ROM points/40 ATAA points], Lil' Miss Gilli RN[Mjr Res Winner] and all the others waiting at the bridge. Website updated 06/07 -------------- Original message -------------- From: Kate Syssoloff <rockannand@xxxxxxx> > Content-Type: Text/Plain; > charset="iso-8859-1" > Content-Transfer-Encoding: quoted-printable > One of the first things Mary Tyler Moore said was regarding how many dogs > just one female can produce ... Something like 7,000 or more. How does s= > he > forecast that? How does she know there will be any female puppies produc= > ed > at all? This kind of generalization bugs me. Such blanket statements ge= > ts > to the public and because it's said on air, by dim witted celebraties, it= > 's > believed. ============================================================================ POST is Copyrighted 2007. 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@xxxxxxxxxxxx VISIT OUR WEBSITE - www.showgsd.org ============================================================================