According to this page.. Chow Chows weigh in at 40-70 pounds. so your pooch may not get much bigger then that.

and for Shepherds they weigh in at 77-85 pounds


heres the webpages i got the info off of

http://www.dogbreedinfo.com/chowchow.htm

http://www.dogbreedinfo.com/germanshepherd.htm