These three strains are called "tremper albinos", "rainwater albinos" and "bell albinos". In amphibians
As with reptiles, many amphibians labeled as albino are, in fact, not completely lacking in all colour pigments. They are actually amelanistic, not albino. Amphibians have six types of chromatophore in their skin, i.e. melanophores, xanthophores, erythrophores, leucophores, cyanophores and iridophores. An amelanistic amphibian therefore, may still have various pigmentation. The incidence of albinism in frogs, salamanders, and newts is relatively higher than other taxa. It has been estimated that one in four hundred of these animals is albino. When albino tadpoles hatch, they are almost transparent. This may help camouflage them initially, however, after two weeks, when their hindlegs begin to emerge, they become milky white. A survey in 2001 found hundreds of tiny albino plains leopard frogs, but when the researcher returned a few months later, not a single albino adult could be found.In European Salamandridae, albinism has been recorded in the fire salamander (Salamandra salamandra), gold-striped salamander (Chioglossa lusitanica), Italian crested newt (Triturus carnifex), marbled newt (Triturus marmoratus), Iberian ribbed newt (Pleurodeles waltl), alpine newt (Ichthyosaura alpestris) and two sub-species of the smooth newt (Lissotriton vulgaris vulgaris and Lissotriton vulgaris meridionalis). Genetics
Genetic studies of albinism in amphibians have focused on mutations in the tyrosinase gene. The albino phenotype of the leopard frog (Rana pipiens) has been attributed to a failure in post-translational control in a single recessive tyrosinase gene which still has some tyrosinase and DOPA oxidase activity.
Albinism in jackals was observed from the Polooni area in Malappuram district and Chaliyam area of Calicut district (Kerala). As albinism is observed in those areas where the density of these mammals is comparatively low, it is concluded that continuous inbreeding could be the reason for expression of albinism.A study on albinistic prairie voles (Microtus ochrogaster) found that albinism in this species conferred an advantage for the males compared to the wild-type; albino males had higher mount frequencies than wild-type males. In addition, the albinos had greater differential fertilizing capacity.Albinism can also occur in marsupials and monotremes as well such as echidnas, kangaroos, koalas, possums, wallabies and wombats as well. Marine mammals
The costs of albinism for marine mammals may include reduced heat absorption in colder waters, poor camouflage from predators, increased sensitivity to sunlight, and impaired visual communication. Despite the costs, some individuals do reach adult age and breeding status.Albino dolphins were first sighted in the Gulf of Mexico in 1962. Since 1994, three further individuals have been seen. These tend to be pink in colour due to blood vessels showing through the blubber and unpigmented skin. A report published in 2008 stated that in marine mammals, "anomalously white" individuals have been reported for 21 cetacean species and 7 pinniped species but there were no known reports of anomalously white sea otters (Enhydra lutris) or sirenians.Whales and dolphins also may appear white if extensively scarred, or covered with a fungus, such as Lacazia loboi.