Chi's Sweet Home

A grey and white kitten with black stripes wanders away from her mother and siblings one day while enjoying a walk outside. Lost in her surroundings, the kitten struggles to find her family and instead is found by a young boy, Youhei, and his mother. They take the kitten home, but pets are not allowed in their housing complex, so they try to find a new home for the kitten. This proves to be difficult, and the family eventually decides to keep the kitten, naming her "Chi". (Source: Wikipedia)

I, Tsushima

The story centers on a woman who is getting on in years, but all her cats think she's a man so they call her Ojii-chan. One day a brazen cat named Tsushima appears in Ojii-chan's yard.

With a Dog AND a Cat, Every Day is Fun

A hard-working way-too-cute dog and a scary-faced but lovable cat. Living with them makes every day fun. Their owner's days are filled with laughter and sentiment. Are you a cat-lover? A dog-lover? Or both? This anime is a present for the people out there who love both dogs and cats so much they can't choose. (Source: Crunchyroll)

I, Tsushima (ONA)

Web anime of Ore, Tsuhima</i> that is concurrently released during the TV shorts' broadcast, streamed on the Asmik Ace YouTube Channel. One day, “Ojiichan(woman)” who likes cats meets a talking(?) cat on the street! The name of the brazen cat who was originally a stray cat is “Tsushima.” “Zun,” Ojiichan’s house cat, “Chaa,” who’s spoiled and cowardly, and “Osamu,” a self-centered gangster cat have already been living in Ojiichan’s house, and Tsushima now lives together with them in peace. Wanna take a look at the wild life of Tsushima and Ojiichan that’s filled with love for cats? (Source: YouTube video description)

My Roommate is a Cat

Mystery writer Mikazuki Subaru, who isn't good at dealing with people, finds them to be a disturbance when it comes to building his imaginary world. One day, he chances upon a stray cat and feels inspiration strike, so he brings the cat home as his muse. Can watching the inexplicable behaviors of a cat form material for a novel?

Poyopoyo

Moe Sato is a young lady who finds a cat and starts taking care of him. Named Poyo due to his round shape, he quickly becomes a dear member of the Sato family. (Source: Anime News Network)

Kanashiki Debu Neko-chan

The anime's story centers on a cat named Maru, adopted by a girl named Anna from a shelter in Matsuyama city. Loved and well fed by the family, Maru gets rounder and fatter every day, spending most of his day sitting by the window and looking at the garden outside. When the family gets a new cat named Cerisier and begins doting on it, Maru gets jealous. In a fight with Cerisier, Maru is hurt by the family's words to him, and follows the advice of another cat to leave and see the world.(Source: Anime News Network)

Kuruneko

Based on a manga about cats and their sake loving owner.

She and Her Cat -Everything Flows-

For the longest time, it's just been the two of them. "Kanojo" and her cat Daru are inseparable, having grown up together. Now a junior in college, Tomoka—her roommate of a year and a half—moves out of their shared apartment, and in order to keep her living space, Kanojo must find a job. Day by day, Daru watches her continued efforts from a cat's-eye view, eagerly awaiting his owner's return. When she gets back, once again, it's just she and her cat. Kanojo to Kanojo no Neko: Everything Flows</i> is a charming short series about the bond between a pet and his owner.

Psycho Nyanya

Nyanya is a psychotic orange cat with only one thing in mind: escape! Determined to keep his owner Young-Sook from getting him neutered, he concocts one crazy scheme after another in hopes of liberating himself from her apartment and finding a cute female cat to be his girlfriend. Willing to do anything to save his nads, the big-headed cat terrorizes Young-Sook night and day. But no matter how much annoyance, abuse, and property damage she's forced to endure, Nyanya will always be her beloved pet - for better or worse!

Nyanko Days

The four-panel manga follows a shy girl named Tomoko who comes home from school and is greeted by her three (personified) cats. (Source: Anime News Network)