page_title: White horse
section_title: True white horses
hierarchical_section_title: White horse / True white horses
caption_attribution_description: English: This white colored horse, with pink skin and dark eyes.
context_page_description: White horses are born white and stay white throughout their lives. White horses may have brown, blue, or hazel eyes. "True white" horses, especially those that carry one of the dominant white genes, are rare. Most horses that are commonly referred to as "white" are actually "gray" horses whose hair coats are completely white and may be born of any color and gradually "gray" as time goes on and take on a white appearance.
context_section_description: White horses have unpigmented skin and a white hair coat. Many white horses have dark eyes, though some have blue eyes.  In contrast to gray horses which are born with pigmented skin they keep for life and pigmented hair that lightens to white with age, truly white horses are born with white hair and mostly pink, unpigmented skin.  Some white horses are born with partial pigmentation in their skin and hair, which may or may not be retained as they mature, but when a white horse lightens, both skin and hair lose pigmentation.   In contrast, grays retain skin pigment and only the hair becomes white.
  White colorings, whether white markings, white patterns or dominant white are collectively known as depigmentation phenotypes, and are all caused by areas of skin that lack pigment cells (melanocytes). Depigmentation phenotypes have various genetic causes, and those that have been studied usually map to the EDNRB and KIT genes. However, much about the genetics behind various all-white depigmentation phenotypes are still unknown.
caption: True white horses have pink skin and white coats, and many have dark eyes, as here.
exif: {"Image Make": "Canon", "Image Model": "Canon EOS DIGITAL REBEL XTi", "Image Orientation": "Horizontal (normal)", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image DateTime": "2007:02:10 16:51:55", "Image YCbCrPositioning": "Co-sited", "Image ExifOffset": "192", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "5902", "Thumbnail JPEGInterchangeFormatLength": "8765", "EXIF ExposureTime": "1/200", "EXIF FNumber": "18", "EXIF ExposureProgram": "Shutter Priority", "EXIF ISOSpeedRatings": "400", "EXIF ExifVersion": "0221", "EXIF DateTimeOriginal": "2007:02:10 16:51:55", "EXIF DateTimeDigitized": "2007:02:10 16:51:55", "EXIF ComponentsConfiguration": "YCbCr", "EXIF ShutterSpeedValue": "125237/16384", "EXIF ApertureValue": "2135/256", "EXIF ExposureBiasValue": "0", "EXIF MeteringMode": "Pattern", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "22", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "3888", "EXIF ExifImageLength": "2592", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "EXIF InteroperabilityOffset": "5778", "EXIF FocalPlaneXResolution": "3888000/877", "EXIF FocalPlaneYResolution": "432000/97", "EXIF FocalPlaneResolutionUnit": "2", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF SceneCaptureType": "Standard"}