An albino bird has a white beak, white plumage, non-coloured skin, white talons and pink or red eyes. Albinism is only seen in about 1 of every 1,800 birds. The two most common species of albino birds are the common house martin and the American robin. Famous albino birds include "Snowdrop", a Bristol Zoo penguin.In one study, albinism in birds has been categorised according to the extent of pigment absence. –

Total albinism – a simultaneous complete absence of melanin from the eyes, skin, and feathers. This is the rarest form. Only 7% of 1,847 cases of avian albinism examined was this type. Incomplete albinism – when melanin is not simultaneously absent from the eyes, skin and feathers. Imperfect albinism – when melanin is reduced in the eyes, skin and feathers. Partial albinism – when albinism is localized to certain areas of the body.However, it has been argued that the definition of albinism precludes the possibility of "partial albinism" in which a mostly white bird shows some form of melanin pigmentation. "It is simply impossible, just like being partially pregnant. In fish
As with other animals, it has been stated that for fish to be properly described as "albino", they must have a white body and pink or red eyes. Artificially selected
Zebrafish have three types of chromatophores—iridophores, melanophores, and xanthophores—which produce silver, black, and yellow pigmentation respectively. Zebrafish that lack iridophores are known as roy mutants, those that lack melanophores as albino mutants, and those which lack both melanophores and iridophores are ruby mutants.
The FDA approved dexmedetomidine for use in dogs in 2006 and cats in 2007.In 2015, the European Medicines Agency and the FDA approved an oromucosal gel form of dexmedetomidine marketed as Sileo (Zoetis) for use in dogs for relief of noise aversion. References
External links
"Dexmedetomidine". Drug Information Portal. U.S. National Library of Medicine. "Dexmedetomidine hydrochloride". Drug Information Portal. U.S. National Library of Medicine.