Green-eye reduction

Flashed people tend to come with red eyes.
Flashed cats tend to come with green-yellow eyes, as the reflection on the floor shows.
That's because they are optimized at the peak wavelength for daylight spectrum.
It should also be noted that a cat's eye have a maximum aperture equivalent to f/0.9 (versus a mean f/2.1 of the human eye). If you want such a lens for your camera, prepare to spend thousands of dollars...