chachi,
I SEE !, mind were the same way !!!
Such nice tiny little puppies...
My Male Sneakers is 2.5 yo/11.5 lbs, and
My Female Becca is 9 mo/6.5 lbs and growing still.
Maybe it's the access to food 24/7, and
the two pounds of Treats each they get every day.
(well almost, just another thing I can't help doing

).
Those BIG Brown eyes and wagging tales, get me every time !
Oddly enough, both of mine Sire and Dame are very "normal" weight.
Sneakers and Becca are Brother/Sister a few Liters apart.
Somehow they just throw large offspring, though I don't expect
Becca to get as big as my Male (I hope).