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. Programs are seen as the citizens of settlements inhabiting digital technology, which come in the form of impossibly tiny cities within the actual hardware. Just like people in the real world.