so they can gather every last photon of light," explains Prof Geoff Boxshall from London's Natural History Museum. "Their eyes are the animal world's equivalent of night-vision goggles." ...

Seeing through one eye or many, in technicolour or black and white, few animals experience the world as we do ... But because rod cells only have a single light-sensitive pigment, at night we see in ...

To honor this history, the Shanghai Museum ... Animal Protection Base were ready with nets and gloves in case of an escape. While no cats were lost, about five or six got loose each night.