Assuming you weren't being facetious, and I've had cats for years (though not now), and assuming all cats are equal, you might just be able to make a fortune selling your training method.
It's not hard to train cats, at all. The 5 Maine .... cats, rescued from shelters, used in the remake of Pet Semetary were each trained to do specific tasks in short order. As in 2 weeks. As with dogs, there are many cat training books.
Teaching a cat to sit is no different than training a dog to sit. Any cat can be trained. Easy, very easy.
I've had cats and dogs my whole life. The Schutzhund trained GSD in my avi knew just over 40 commands. He understood some in German, Dutch and English. My current GSD also understands commands in the same three languages. Current GSD also knows each one of her 20+ toys by name and will bring me whichever one I ask for.
I'm not looking to
make a fortune.
