Puppies of certain breeds increase their weight 60 times during their first critical year!! This is amazing, they require the best you have to offer. This chart is only a guideline, all puppies are different.
Age/month....................Adult Weight
1.......................................10%
2.......................................20%
3.......................................33%
4.......................................50%
5.......................................67%
6.......................................83%
Again, this chart is a rough "sketch".