You're a bird, flying in looking for tasty morsels in the shrubbery. Ooh, what's that, something fluttered by and landed? You investigate...sheeeyit there's a sharp-eyed mammal staring back at you!
Yesterday's Emperor
@sciencebase I remember reading about work that showed that without the catchlights, they were far less effective. Don't recall how they did it though.
@sciencebase Whilst you're there, do you know what pica means as in Na pica sulphate?
@SteelFolk Ah, interesting. I assumed there'd be something. Because these surfaces are photonic, the brighter areas will actually glisten and shimmer in sunlight so making them look shiny like real eyes, amazing evolution!