Rip is 5.6 lbs at 11 weeks old.  The "breeder" (and I use that term very loosely) stated that he would not be over 10 lbs at full growth.  Having only ever had large dogs before, I have no experience in estimating what Rip's full size might be based upon his current size.  Thanks to Tracey's post (www.rat-terrier.com/Home/tabid/37/forumid/4/postid/91419/view/topic/Default.aspx) regarding Class A & B Ratties, I can safely say that Rip has a Class B body type, if that helps. 

I am only curious in a possible size estimate so that I can plan things like buying a soft tote that won't be too small when he's fully grown.

Any help would be appreciated.

Thank you!

LOL, Kim!  Amos is defintely a big, beautiful boy!

Thanks much, Lisabeth, for the "supposed to be" size info.  If he follows that protocol, Rip should be...likely 12-15lbs.  I should know better in a month, tho, when he hits that 16 week mark. 

There are pics of Rip (as well, of course, as our GSD and Aussie mix) at stormcarver.com/Family/Dogs.html

Posted By tiggarat on 07/15/2008 8:00 PM
KIM!! Don't scare them!! Amos is a VERY special (and rare) rattie.

this question pops up every once in awhile...I went back and found the "offical" growth chart.


formula for determining adult size from puppy size:

weight @ 6 weeks times 4 or 5 = adult weight

weight @ 8 weeks times 3 = adult weight

weight @ 16 weeks times 2 = adult weight

OMG!  This is so true....we got Dink at 14wks (his 1st vet visit he was 15wks) and he weighed 6 lbs.  He turned 1 in June and he had a vet check up last week and the vet said he was 12 lbs which is right on the money and a total shocker for me b/c I could've sworn he was between 8 - 10 lbs and a Toy Rattie b/c he is so sleek and muscular and LIGHT AS A FEATHER.  I just about fell over when the girl told me he was 12 lbs.  So my Dink is a Mini Rattie!!!