Dakishimete! Noir
Cute and child-like high schooler Suzu has an affinity with animals. She wasn't aware of just how much so until the day a large black cat literally falls into her arms! She wakes up after taking the injured cat home to treat its wounds, and finds a naked boy, "Noa" in her bedroom! He claims to be the cat, "Noir".
http://www.mangaupdates.com/series.html?id=975
F.O.X
Tiem Sum accidently sees a cute silver fox turning into a guy. He confronts her and tells her that she has to marry him, since she saw him naked. While trying to woo Sum, he is also looking for his lost brother.
http://www.mangaupdates.com/series.html?id=3573
Guru Guru Pon-chan
Ponta is a Labrador retriever puppy, the Koizumi family's pet. She's full of energy and usually up to some kind of mischief. But when Grandpa Koizumi, an amateur inventor, creates the Guru Guru Bone, Ponta's curiosity causes trouble. She nibbles the bone - and turns into a human girl! Now Ponta lives two lives: one canine and one human!
http://www.mangaupdates.com/series.html?id=1260
Hoshi ni Negau
A dog named Nonnon who loves her master very much wishes to become a girl! What will happen to her now?
http://www.mangaupdates.com/series.html?id=2949
Kindan no Koi de Ikou
Hisako is saved by a beautiful wolf that turns into an even more beautiful man… but can a relationship like this work!?
http://www.mangaupdates.com/series.html?id=2054
Mugen Spiral
Yayoi, a spunky high school girl, has inherited spiritual powers from her mother, and she uses these powers to protect people. During a fight with the devil Ura, Yayoi's power turns the devil into a black kitten. Now, even though Ura doesn't hide his desire to "eat" Yayoi's power when he gets the chance, they develop an interesting relationship: the two begin living together, and Yayoi takes her new feline "friend" on her adventures.
http://www.mangaupdates.com/series.html?id=6818
Penguin to Strawberry
Hiro and her family are dirt-poor, so when she finds a strangely-dressed, sparkly young man lying in the middle of the street, she's more concerned with having to feed an extra person than she is with his ridiculous claims of being a magic-wielding prince. At least, that's how it is until he turns into... a penguin?
http://www.mangaupdates.com/series.html?id=48182
Shiro no Keiyaku
Shiro is a white crow. Because of his unusual color, he’s often bullied by the other black crows. One day, he’s hurt badly because the others ganged up on him, and he was saved by a girl. Moved by the girl’s gentle heart, Shiro asked a devil to let him turn into a human. However, there’s one condition: Shiro will have to do at least one bad deed a day, otherwise, his body will crumble. Can Shiro really fulfill this contract?
http://www.mangaupdates.com/series.html?id=36297
Tokage Ouji
Princess Canary is to go to an omiai with Prince Heath, a prince from another kingdom known for his flirting with women, drinking and gambling. She agrees but only to have the chance to preach to him about the way he rules his kingdom. Prince Heath is completely opposed to the idea and instead of going, gives his pet lizard a potion to turn him into an exact duplicate so that he may replace him.
But when the lizard and Princess Canary meet, she is surprised to find herself falling in love with the prince thinking the rumors may not be true at all. What will happen when she discovers that the prince she’s falling in love with is actually a lizard? And what about the lizard, himself? Will he be content living as a lizard once he’s had a taste of what being human is like?
http://www.mangaupdates.com/series.html?id=10055
Rurou no Tabi
Lakate is a man with the face of a wolf due to a curse. While traveling to find a cure for his state and the reincarnation of a woman who helped him long ago, he meets a lost young girl, Kukaru. This is where his real travel begins...
http://www.mangaupdates.com/series.html?id=24738
Alice in Wonderland
A prince from Wonderland is about to decide who he shall marry, but he doesn't feel that he loves any of his brides-to-be. So he asked his personal advisor, who is also a wizard, to let him go to the human world and try his luck. The wizard agreed, but the prince has to go as a dog, he can only turn back as a prince only twice while he was there and most of all he cannot tell his name to the woman he wishes to get married with, or otherwise he won't be able to marry her.
http://www.mangaupdates.com/series.html?id=23955
Kon na Panic
Mai Kisaragi was born as a shy, and cowardly person; always allowing people to take advantage of her. The object of her affection is the school's basketball star, Takumi Kai. This is where the story might have begun and ended... if something strange hadn't happened. Tired of being mocked one day, she suddenly gains a supernatural power during basketball practice. And soon, she is visited by a fox spirit named Ran who informs her that she is infact part fox spirit. At first, she doesn't believe him... until she transforms into a fox herself.
http://www.mangaupdates.com/series.html?id=10048
Men Are Wolves?
Shiino Tazumura is a bit of an odd girl. One day in a park, beside what is rumoured to be a haunted house, she discovers a beautiful dog injured behind the bushes whose wounds she tends to. The next day, a beautiful boy resembling the dog shows up on her doorstep...
http://www.mangaupdates.com/series.html?id=8021
Love Monster
After failing the entrance exams to her school of choice, Hiyo Osora gets an acceptance letter from SM Academy. But she didn't even apply or take its exam! When she arrives, there's something amiss -- all the students are... monsters!? And the head of the student council says he's her fiancé right before he sprouts giant black wings!
http://www.mangaupdates.com/series.html?id=368
Fiancé wa Monster!?
Hitomi Miku goes to live in a mysterious house, where she meets Rauto, the young and sexy master of the house. There, she discovers that the house is full of monsters! Rauto gives her a special necklace, and she suddenly transforms and knocks out an evil monster who had possessed a girl! What's going on? Becoming Rauto's maid and fiancé? "I'll knock out everyone's heart."
http://www.mangaupdates.com/series.html?id=13338
Wolf's Rain
Humans thought the wolves died off two centuries ago in this bleak post-apocalyptic wasteland. But some survivors lurk among the humans by mentally cloaking their animal bodies. One white wolf, Kiba, scours the land for the scent of the Lunar Flower that will lead them all to Paradise...But will it lead them to a deadly false legend?
http://www.mangaupdates.com/series.html?id=3289
Hope you like them =)