You could also close the cat door or however it comes in when the cat is inside and then chase it around until it sits in a corner and does nothing. Then grab the cat, open the door, and throw it on the grass or something.
I'll be waiting for an organized religion or some primitive sign of scientific research among elephants then.
Maybe the elephants are clever enough to not need this religion bullstuff that humans appearantly need to quickly find nonsensial explanations for things they don't know yet.