no matter how hard you try to teach your cat general relativity
you’re going to fail. That's why for a limited time, I'm offering a class demonstrating special relativity only for cats. Note to Scientists: this is not Schrödinger's famous cat paradox. First you need to get yourself a cat and put it in a bag. Then get a lot of yarn, in theory string will work, and then tie up the bag with it. This is to make sure that the cat doesn't get out of the bag. Now introduce a state of spin, and accelerate. Once proper velocity has been reached... release. Now there is a 50 percent chance that the cat will land on it's feet, and a 50 percent chance that it will land on it's head. Of course this is all speculation, as we won't know which will happen until we obsevere it. But this is a moot point, as we are throwing the cat into the river. Now repeat the experiment with a small dog, maybe a terrier. Given enough time the atoms of the cat and the dog will reach the ocean. Then solar rays will excite the atoms (simmer for about six months) and they will evaporate into the atmosphere. Now if a butterfly flaps its wings in Peking, then in Central Park you get rain instead of sunshine. So Relativity dictates that leash laws have little impact. Note to the Human Society: no cat or dog will be harmed in this experiment with any more certainty than quantum physics will allow.