56-year-old woman, identified by her surname Chien, had repeatedly arrived at the World Gym in Tamsui in Taiwan’s New Taipei City with her orange cat and was stripped of her membership last month.
Videos shared on social media captures Ms Chien returning to the gym on September 4 and confronting the workers over the strict “no pet” rules.
She is seen holding her cat in one arm while arguing with a female personal trainer.
Ms Chien then shoves the cat towards a member of staff and says: “Hold my cat. Let me punch her [the trainer].”
While the staff tried to stop her from going further inside the gym, she took off her clothes and walked around naked.
After 30 minutes of chaos, the woman was subdued and made to put her clothes back on when the police arrived at the gym.
Ms Chien was taken onto an ambulance and sent to Mackay Memorial Hospital for a medical checkup by the paramedics.
She was arrested on suspicion of one count of sex offence and one count of causing bodily harm.
Watch the video below.