Unfortunately both my Breeder's predicted the wrong weight to boost their price. I felt lied to, but I love them just the same! Artie was only supposed to be 5 pounds, he was up to 10 1/2 lbs. just last month, he has lost 1 pound on his new Diet. Abigail I was told would be 12 lbs. she was already 9 1/2 pounds last month, her new Diet brought her down to 8 3/4 lbs. I cut all their Table/Human Food, they both exercise alot (we live next door to the Dog Park) They are very muscular so I can see the heavier weight. I do not prefer the smaller ones, just b/c they are more delicate. So I intentionally wanted a medium weight & size. But nothing over 10 pounds, a friend of mine has a 50 pound male that has allergies and a special potatoe Diet?