Kanojo to Kanojo no Neko

Both are told from a cat's point of view.  

About cats for cats lovers 

Both about kitties <3 Alltough this one is a bit more..emotional :P 

Made by the same person. Both talk about one's relationship with the other. Both are similarly animated. 

The two girls in anime have conflict with their inner self, demonstrating a deep depression for not understanding the meaning of his own existence, and the examined life by a "second person". Os dois animes apresentam garotas em conflito com seu eu interno,demonstrando uma profunda depressão por não entender o significado de sua própria existência ,tendo a vida analisada por um "segundo personagem" . 

Both are very short, a bit philosophical and made by Makoto Shinkai. 

Short stories of a young woman and her life accompanied by her pet. She and Her Cat with a Cat, Egao with a hamster. Though Egao is expressed through music. They are both good s.o.l anime. 

Both are animated short-films revolving around rather, narrating the lives of two girls, individually. The stories in both the works of Makoto Shinkai are narrated throughout by an unknown narrator whose identity gets revealed in the climax, in a subtle yet beautiful manner. Both the stories involve cats who form the essential element of the short-films. 

Special ones, including pets. She and Her Cat and Someone's Gaze are both anime following narrated family lives, with people who create bonds as far as between humans and pets. Both anime having pets being with a cat. Both are good short anime, made by the same director Makoto Shinkai. 

Chobi and Mimi, cats from Kanojo to Kanojo no Neko are also in Byousoku 5 Centimeter. 

Both are visually beautiful and share a similar sense of quiet beauty and melancholy to them. All of Makoto Shinkai's works (Tooi Sekai, She and Her Cat, Voices of a Distant Star, The Place Promised in Our Early Days, 5 Centimeters per Second) present the pursuit of an unattainable goal and a visually stunning contemplation of loneliness. Both of them have wonderful music performed by Tenmon. 

Both are an extremely short, yet dramatic, short OVA/Movie which both seem to try to play on your emotions. 

They are short and don't have a lot to offer, but I can tell you now that the attachment presented in the two is very real. It's a beautiful thing to have such a connection. The short and sweet stories can prove such sentiment. 

Cats. Everyone loves cats. So much so that we have two entirely different stories on cats still made out to be one of the best things in their respective genres. A short chill romantic story on love with a cat? A short wild comedic story on a cat's house life? She and Her Cat and I Tsushima deliver incredibly well respectively. A calm atmosphere with sincere feelings for one another and a wacky world of talking cats doing all kinds of craze with their owner. What more do you want when cats are involved?  

Kimi to Boku and Kanojo to Kanojo no Neko (She and Her Cat) are so eerily similar in their content, style, and portrayal that it's not out of the question to think that Makoto Shinkai drew a great amount of inspiration from Kimi to Boku, taking the best parts from the flash animation that aired a year earlier, sprucing it up with better art, animation, and music and modifying the souls of the characters somewhat. Kimi to Boku is worth a watch if you want to see something a little different, a tad slower, and a tinge more melodramatic.