There are many factors to consider when predicting the size of the puppy as an adult,
even when all these are taken into account, there is still no guarantee on how big he will get,
it is always just an estimate!
Download the file attached, at the bottom of the page, and watch your puppy's growth!
It is good to keep an eye on the growth of your puppy, and if he stops growing for a length of time, to have him checked out at the vet.