Inu to Neko is an anime that makes people happy for its simplicity and convenience.
The show is short, with fun episodes, an educational story and a lot of humor, where a dog, a cat and its owner star in the series. What's so special about it? Nothing, but it is certainly cool to accompany, especially if you have a pet living with you. It is a show to identify with your own experiences with your pets. It's a very good variety of episodes, where being simple can be great.
Finally, it is another one of the shows that I would recommend to see when you have free time. It's cute and I highly recommend it. Objectively better than many current animes (and this is really serious, even unknown animes have more to show than disappointing hypes).