Guru Guru Pon-chan

Guru Guru Pon-chan (ぐるぐるポンちゃん?) is a manga by Satomi Ikezawa. In 2000, it won the Kodansha Manga Award for shōjo.[1][2] It was published in the United States by Del Rey Manga.

Plot
About about a Labrador puppy, named Ponta, who turns into a human and falls in love with Mirai Iwaki, who's very popular in his school.

Other Sources

 * Guru Guru Pon-chan
 * http://www.animenewsnetwork.com/encyclopedia/manga.php?id=2856