So my parents got their 2nd husky 3 days ago but she seems undersized at 7 weeks compared to my first one when he was 5 weeks old.

My first husky (Zeus) is a year old already but when I got him the guy said he is 7 weeks old, took Zeus to the vet 2 days later and told us he is 5 weeks old. But Zeus seemed regular sized for 5 weeks.

Now Luna, my parents got her at 7 weeks but she is smaller then Zeus at 5 weeks. Is this normal? They found Luna through the AKC market place and went to get her (without me knowing). But question is, is she under sized? Or will she grow to normal size? Or were we lied to and she is younger than advertised?

Zeus http://imgur.com/a/lGVKAON

Luna http://imgur.com/a/Xv4jfUR