Garter snakes detect a chemical signal from earthworms—one of their favorite foods—via the VNO, and they use this signal to track their prey.

束带蛇通过 VNO探测到来自蚯蚓（它们最喜欢的食物之一）的化学信号，然后它们利用这个信号来追踪它们的猎物。