| 摘要 |
A laser source is fixed onto tweezers, and a bar is detachably installed on the tweezers. If any portion of a cat leash is picked with the tweezers such that a laser can be seen, a cat moves in response to the laser due to the instinct thereof, and the laser moves together whenever the cat moves. Thus, the cat keeps moving. Therefore, the cat can exercise in a semi-automatic manner. |
