An animal health example of managing and analyzing a large volume of data on a PC: Modeling body weight and age of over 13 million cats for explanatory and predictive purposes.

•Memory becomes a concern when creating models based on data from electronic medical records.•Processing the data in parts or sampling can allow analysis on a PC.•The relationship between weight and signalment in cats was explored.•Weight of domestic cats peak in middle age, with intact cats weighing less.