Was he eating enough when he was congested?
I don't care much for the growth charts. They're all different. Venus grew fast, her weight and height before 4 months put her in the extra big girl range - the vet was saying 85-90lbs. At 14 months, she's 70lbs and a little fat right now for the frame she's filling into.
Venus of Crooked Creek 1/26/13
Otto von Hena-C 05/23/08
Morgan Donnermond 08/04/01 to 9/28/12 Long Live the Queen!
I have duct tape and I am not afraid to use it.