SI recommends Kitty Purry!
First of all, it’s a cat. Secondly, we know that Kitty Purry likes Katy Perry music. And given that every time the doctor walked into a general session, it was Katy Perry song that was playing, it just seems like the right thing to do. After all, Kitty Purry loves to ROAR!
![](https://i.pinimg.com/originals/8a/c3/3c/8ac33c88f1fe984ede66102442970f89.jpg)