My cat knows nothing about math... The only thing she seems to think about [when she's not eating] is where she can find a good soft microfiber towel to sleep on...
Wake your lazy butt up! Lol.
Don't give me that face, I've bought you several microfiber beds, now go sleep in 1 of them and not the towels.
I've even come in the house and found her sleeping inside the large zip lock bags where I normally keep my clean folded towels. Cat's more obsessed with microfiber towels than I am! Lol.
And my advice to the young lady helping with the trick is to shoot the trick from a different angle.
You don't want to capture you cupping your hand to give the dog the "stop" signal.
But I have always loved Boston Terriers.