The Humane Animal Services of Solano County and the Fairfield Police Department are looking for the dog and her owner.
The video originally posted on Facebook has already gotten tens of thousands of views. Sgt. Michael Ramirez with Solano's Humane Animal Services told FOX40 his agency knows who the woman throwing the pug is. Brandi Chin is the suspect authorities are trying to find and believe has abused this dog before.
"We are currently looking for her at this time. She is, from what I understand, hiding from us," Ramirez told FOX40. "She was recently seen walking down a business district in Fairfield, and she apparently had the dog by the tail and she was swinging it around."
Seward said the pug, named Ben, was hurt in a heated argument between the couple.
"She got in a fight with her boyfriend, and she got upset and she... I don't know took the dog," Seward said.