If you're looking for manga similar to Tanukoi., you might like these titles.
A series of encounters with Koganemaru, a magical tanuki that saves the hearts of those in need.
Fukuko is an average girl. She's chubby and has a crush on the nicest guy in her class, Kiyohara. Then she turns fourteen, and her "normal" family reveals they're all actually shape-shifting tanuki! Big surprise!! What's more, she can gain Kiyohara's affections by shape-shifting into the teacher he has an (unrequited) crush on. Things are looking up! Until Konno, the guy in class who always picks on her, turns out to be a shape-shifting fox and sets out to ruin it all. Huge surprise!! The utterly bizarre story of a tanuki's shape-shifting first love.
Imagine if a child who had passed away suddenly reappeared, looking exactly as she did before. But what if it was all the doing of a shapeshifting tanuki? This isn't a reunion. She isn't real. And yet, her parents cling to the bittersweet lie.
Morimura Nobara, 15 years old. Because of a fall from the cliff three years ago, she can hear the voices of animals. Once she got used to it, she notices that there's a guy's voice that says 'I can hear you clearly'
With a miraculous invention, a small, male chihuahua turns into a human! This is the story of Sakura (a human female) and a chihuahua living together!
Erina loves cats more than anything, even though she looks like the haughty-princess type who could have any guy she wants. But even with his cat-like name, she can’t stand her aloof classmate, Nekoyama-kun. But when she rescues a hurt kitty in her yard and gives it a perfect, snuggly kiss…she suddenly finds a very human Nekoyama-kun in her room? What gives?!
Modern day Japan. A fox and raccoon have been driven into dwelling with humans. Two are chosen to live in the village as humans and protect their mountain. They are: the ever-fighting fox Yugao, and the raccoon, Shitara. Unlike Shitara who finds it to be an awful disaster, the always cold Yugao doesn't seem to agree... "A disaster? Far from it! This is heaven!!!" Yugao's made up his mind to take advantage of this once-in-a-lifetime opportunity and be more upfront with Shitara, the raccoon he's always secretly loved. Will Yugao be able to tell Shitara how he feels after years of complicated built-up fantasies!?