Kittygrams are the furry version of standard Programs. They are considered Oddballs due to their abnormal cat-like traits. Most likely, similarly to other animalistic Oddballs, Kittygrams have unnatural (presumably cat-like) instincts and are more difficult to teach/train in comparison to normal Programs. There are 8 degrees of difficulty with 72 levels each, for a total of 576 games!
How To Play Kittygram