Not from 4chins, but a few years back - Ridglan Farms in Dane County, Wisconsin??
Bred to Suffer
Inside the Barbaric U.S. Industry of Dog Experimentation
https://theintercept.com/2018/05/17/inside-the-barbaric-u-s-industry-of-dog-experimentation/
THE DOGS OF SCIENCE HOW WE BETRAYED MAN’S BEST FRIEND
https://static1.squarespace.com/static/515cca87e4b0bca14d767b61/t/5afaa0e6575d1ff8cda516c6/1526374722284/Iron+Cage+Report.pdf