Why do white lions have white fur and blue eyes?

White lions have white fur and blue eyes due to a genetic mutation affecting their pigmentation. Specifically, the condition is caused by a recessive allele that inhibits the production of the typical tawny coloration. This mutation not only results in their distinctive white coats but also influences the color of their eyes, which are blue as a result of the same genetic factors. While striking in appearance, these traits can make them more vulnerable in the wild due to reduced camouflage.