They are colorblind because colorblindness doesn't mean "can't see any colors at all" but is a spectrum of divergence in color perception in relation to the normal human capability.
I mean the myth I always heard growing up is that they see in black/white. So sure, to our standards they're red-green blind, but they do still see in color.
Also the fact that it's specifically blue-yellow is part of the trivia. Cats can't tell the laser pointer is red, but it's still a super bright dot because of their insane light-dark discrimination.
They are colorblind because colorblindness doesn't mean "can't see any colors at all" but is a spectrum of divergence in color perception in relation to the normal human capability.
I mean the myth I always heard growing up is that they see in black/white. So sure, to our standards they're red-green blind, but they do still see in color.
Also the fact that it's specifically blue-yellow is part of the trivia. Cats can't tell the laser pointer is red, but it's still a super bright dot because of their insane light-dark discrimination.