That sounds right. Hogan is 7 1/2 mos. too. Last we weighed him he was 45lbs on March 5. (I know he just went through another growth spurt last week though) I can't get his height measurement because he won't stand still for the tape, but it's around 22-23 inches.
Hogan - 8/05/03
Hilda - beautiful rescue went to the bridge 10/12/06
Lana Zug Zug - 9/04/06