While Darth Vader is not always an expected visitor at the Animal Hospital,  he has typically been welcomed.  Unfortunately, in an attempt to get the breathing just right for his four-legged audience, Vader ended up hyper-ventilating and sitting down on somebody’s cat.  The vet has politely asked that Mr. Vader refrain from such energetic performances on his next visit or perhaps direct his efforts toward the fish section of the hospital.