Cats have two types of cone cells in their eyes rather than three, so they're essentially red-green colorblind. This means that my orange cats think they're the same color as my grey cat.
While pondering this, I realized: I think my spouse and I have similar skin colors, but a rainbow mantis shrimp might not agree.
While pondering this, I realized: I think my spouse and I have similar skin colors, but a rainbow mantis shrimp might not agree.