Is the placebo effect working on cats ?

So today's question is: Is the placebo effect working on cats ?

I confirm that it indeed works and here's a faithful account of a story which happened with my cat a few years ago (some dramatisation added).

A proof that cats fall for the placebo effect

Cat studies I

Studying cats - part 1 

Today is dedicated to studying cats. All inspired by none other than my in house cat.