well now this is interesting, those are from radically different points in the episode, but aside from lighting, the details are too much the same. Theres no way the cat is gonna sit still for that long, or keep the same collar position. EDITING WORK IS YOUR FRIEND, I'm thinking.
Fake dead cat doesn't even look similar when you slow it down to more than three seconds of airtime. That must be why they kept the shot on it blurred at all times: