James Amos-Landgraf needed a pig.
The assistant professor of comparative medicine and genetics at the University of Missouri had joined forces with a startup company developing a tool to detect early colon cancer-causing lesions. They already tried out a rat-sized model, but still needed a human-sized prototype.
http://decodingscience.missouri.edu/2015/08/19/the-crispr-revolution-at-mu/