2. They typically have yellow eyes due to Melanism. Melanism is basically the opposite of Albinism. An excessive amount of melanin in these cats is what causes their fur to be so black.

Albinism is much rarer than piebaldism, occurring only in 1 of 30,000 deer. Overall, when it comes to melanism versus albinism in wildlife, melanism tends to be somewhat rarer.

Albinism is much rarer than piebaldism, occurring only in 1 of 30,000 deer. Overall, when it comes to melanism versus albinism in wildlife, melanism tends to be somewhat rarer.

Stares, taunts fill life of black twin, 10, with albinism; brother unaffected. Aug. 25, 2010 — -- Kenyen and Khari Flowers are 10-year-old, African-American twin brothers. Born 25 minutes ...

Animals with albinism are more likely to have poor eyesight, hindering their ability to find food and detect potential predators, National Geographic reports. It also complicates the mating process.