Tamago Onsen lit. "Hot Springs Egg" or also called Tama-chan is a flying turtle in the Love Hina series. Tama-chan was given to Keitaro by Mutsumi as a gift.
Keitaro points out that the turtle is male, but the girls are convinced he is a 'she' and so 'he' is referred to as 'she' throughout the manga. She is an 'onsen kame' or hot-springs turtle, and like others of her species. Su, Mutsumi, Seta, and (later in the series) Keitaro appear to have the ability to speak with Tama-chan, and Su occasionally develops the urge to eat her, though sometimes it is just to tease Shinobu (in the manga, it is said on a side note that Su drops this habit in order to wait for Tama-chan to reproduce).

Source: Wikipedia