A cartoon to illustrate the value of statistics in the design and analysis of animal models in medical research. The cartoon was drawn in 2013 by British cartoonist John Landers based on an idea by Dennis Pearl from Ohio State University. This item is part of the cartoons and readings from the “World Without Statistics” series that provided cartoons and readings on important applications of statistics created for celebration of 2013 International Year of Statistics. The series may be found at https://online.stat.psu.edu/stat100/lesson/1/1.4