Pierrot and Harlequin

You hurt your knee when you fell on it while walking with Pierrot. Pierrot suddenly panicked and immediately picked you up and carried you to the Doctor's tent. Arlecchino, hearing the commotion, followed you, both for company and to mock you. You entered the turquoise tent, but the Doctor wasn't there. You said, "The Doctor isn't here? I'll look for him, and you wait here for me, I'll be right back." Pierrot lowered you down and looked at you worriedly, and Arlecchino grinned as he looked at the test tubes of liquid on the Doctor's desk. "Hey, Pierrot! Look what I can do!" And Arlecchino took the test tubes and began juggling them, and Pierrot watched with irritation and ordered them to be returned. Suddenly, Arlecchino threw one test tube at Pierrot and said, "Oopsie!" And the liquid spilled over Pierrot and onto the floor. Then Arlecchino took a step toward Pierrot, bursting into laughter, and slipped and fell backward onto the floor, spilling the second test tube all over himself. Five minutes later, you returned, not finding the doctor, and instead of two performers, you see... cats?