NintenCats may be in the works

4 years after NintenDogs released, there might be a feline version in production.

During a recent meeting with Japanese investors, Shigeru Miyamoto finished his speech with "Also, I've recently been caring for cats. That is all."
This was then replied to by Satoru Iwata with "he just gave a big hint.”

While this doesn't reveal the existence of NintenCats, it does hint towards something along those lines.

Source: http://www.n-europe.com/news.php?nid=13648