Keeping records helps me remember what has happened with the development of each puppy in a litter. For example, in my opinion, the size of a Keesond as an adult can be predicted by the amount of weight gain in their first 8 weeks of life, not by their actual weight at 8 weeks. It makes sense to me that if a puppy gains more than its littermates in the first 8 weeks, he is likely to continue to do so until it becomes an adult.