| 摘要 |
A feeder is disclosed comprising an elongate receptacle for food; a removable part; and an elongate retractable member positioned within the feeder whereby the direction of elongation of the retractable member is parallel to that of the feeder, wherein, in an engaged position, the retractable member is engaged with the removable part so as to couple the removable part to the feeder, and, in a retracted position, is disengaged with the removable part as to uncouple the removable part from the feeder. |
