But the truth is, I have been training them since they were 4-months-old as if they were actually puppies -- same commands, same rewards-system, etc., and it really works. Cats can absolutely do tricks, but most humans just don't bother to teach them.
The kittens are a bit limited by what "tricks" they can learn as their coordination and balance will always impact their physical ability to perform, but they are very smart and very eager to try. Yet, people tend not to believe me when I tell them that the kittens know how to SIT upon command. Here is video proof of their intelligence:
Smart kitties :)