A display apparatus includes: a display panel to display a first image having a first image spectrum corresponding to a first animal spectral sensitivity curve of a first cone cell of an animal, and to display a second image having a second image spectrum corresponding to a second animal spectral sensitivity curve of a second cone cell of the animal, in response to output image data. At least one of the first and second animal spectral sensitivity curves is different from first, second, and third human spectral sensitivity curves of cone cells of a human that perceives red, green, and blue colors.