John Cancalosi / Axolotl / Mexican salamander (Ambystoma mexicanum), white or leucistic form, critically endangered in the wild, captive, native to Mexico

Luciano Candisani / African Lion (Panthera leo) white adult female and juveniles eating Thomson's Gazelle (Eudorcas thomsonii), Sanbona Wildlife Reserve, South Africa

Luciano Candisani / African Lion (Panthera leo) adult male, Sanbona Wildlife Reserve, South Africa

John Cancalosi / American alligator {Alligator mississippiensis} leucistic, captive, USA

Ben Cranke / Lion (Panthera leo) female and cubs, one cubs a leucistic white male. Greater Kruger National Park, South Africa.

Melvin Grey / Blue tit (Cyanistes caeruleus), two feeding on fat ball, one leucistic. Carmarthenshire, Wales, UK. August.

Melvin Grey / Senegal thicknee (Burhinus senegalensis), leucistic. Gambia, Africa.

Loic Poidevin / Red deer (Cervus elaphus) leucistic stag in velvet. Jaegersborg Dyrehave / Deer Park, Denmark. May.

John Cancalosi / White-tailed deer (Odocoileus virginianus), leucistic white doe, New York, USA, June.

John Cancalosi / White-tailed deer (Odocoileus virginianus), leucistic white doe, New York, USA, June.

John Cancalosi / White-tailed deer (Odocoileus virginianus), leucistic white doe, New York, USA, June.

Jussi Murtosaari / Yellowhammer (Emberiza citrinella), leucistic form, Finland, February.