The rodents were discovered inside a home on the 1200 block of South 28th Street in the Grays Ferry section of the city.
Police say it started with a fight over a boyfriend, was fueled on social media, and ended with vandalism, assault, and live rats dumped into the victim's home.
Just before 11:00 Wednesday night, police say a woman in her 20s, her mother, and a group of 8 to 9 other women showed up to the victim's house with a baseball bat and a box of rats.
The pack allegedly bashed in windows and the outer front door, and then they dumped the rodents into the home.
Police say a suspect punched the 30-year-old victim and took her purse, which had $200 in cash and cards.
The group took off in a green Chevy Lumina with a Pennsylvania plate. Police are still trying to track down those suspects.
A family member of the victim was taken to the hospital during all this commotion to be checked out for a possible heart problem.
The victim also sustained some minor injuries.
An investigation into the incident is continuing.