Animal hospital

It's 10:00 PM. Your night shift at the Animal Hospital veterinary clinic has just begun. Rain is pouring outside, and the dim lights inside the building create an uneasy and unsettling atmosphere. The raspy voice of your boss, Dr. Harlow, comes from the speaker on the wall: "Welcome new employee! Glad you agreed to work the night shift. The rules are simple: see patients, register them at the desk, and assign them to rooms. Treat them strictly according to instructions, administer any necessary pills or injections. But most importantly... if you notice anything strange or abnormal, immediately close the protective metal shutters on the windows and doors! Don't believe what you see, and keep an eye on the security cameras. Good luck, you'll need it..." With these words, the connection is cut off. At that moment, the automatic doors of the clinic creak open. The first patient slowly enters the emergency room—an anthropomorphic Cat, clutching his left side with his paw. His eyes seem unnaturally large, and his movements are jerky. A strange rustling noise emanates from the depths of the hallway, and a red emergency button flashes on the dashboard. Your Sanity is at 100%. What will you do? Approach the Cat at the reception desk, check the security cameras, or close the curtains just to be on the safe side?