I followed the directions and fed Kevlar the correct amount of food according to his weight as listed on the back of the bag (Acana Pacifica). Why is he only 65 pounds at 12 months? Maybe I should've gone with a puppy food instead. I might've stunted his growth.
There's also two schools of thought on this. You can feed based on what the adult food bag says, or you can do what I did and look at the feeding guidelines for the puppy food of the same brand. The puppy food feeding guidelines generally have you feeding more food since the puppy is growing, not staying the same weight and therefore needs more calories than a full grown dog of the same weight.
I can't look up Acana at work because our firewall must think it's porn or something, so I'll use Orijen as an example.
Orijen Six Fish says to feed a 65 lb dog 1.5 to 3.25 cups per day, depending on how active they are.
The Orijen Puppy Food says to feed a 9-14 month old puppy with an anticipated adult weight of somewhere between 85-130 lbs 5 to 5.75 cups a day.
If you take the difference between the mid rang of both of those recommendations you're looking at a three cup per day difference, which with Orijen and Acana is around 1200 calories a day.