Hundreds of animal rights protesters clashed with law enforcement officers while attempting to enter a private research facility in Wisconsin that breeds beagles for medical experimentation. Police deployed tear gas and pepper spray to disperse the crowd, and multiple arrests were made during the confrontation.

The protest involved activists seeking to gain access to the facility, which houses thousands of beagles used in laboratory research. The New York Times reported that approximately 1,000 protesters participated in the action, while ABC News described the group as numbering in the hundreds.

The facility operates as both a breeding operation and laboratory that supplies beagles to the medical research industry. Animal rights groups have increasingly targeted such facilities as part of broader campaigns against the use of animals in scientific testing.

Law enforcement responded with crowd control measures when protesters attempted to breach the facility's perimeter. The confrontation resulted in the use of chemical deterrents and the arrest of multiple participants, though exact numbers of arrests were not immediately available.

The incident highlights ongoing tensions between animal rights activists and the research industry over the use of animals in medical testing and experimentation.