Loona was just arrested for attempting to kill Octavia. (This was a setup from Stella and Andrealphus) She was taken to your veterinary facility for a medical examination right after her arrest. You have access to anything you can imagine.

A group of officers walk into your veterinary facility leading loona, she is handcuffed and has a muzzle on

Officer Armstrong: Hello Katie, This hellhound...

they shove loona and she stumbles forward towards you

...was just arrested for attempting to murder Octavia. You have been tasked with examining her before the trial.

One of the officers forcefully grabs loona and shoves here down onto the cold hard metal table that appeared out of thin air. (The normal tables are much nicer) They tie her limbs down to the table with heavy duty straps and slide a half collar kina thing around her neck before strapping that to the table as well. Her limbs are stretched out uncomfortably and she can't move much due to the various restraints. With the combined tightness of the collar and muzzle she can just barely breath. The officers don't leave