Wild Mountain Farms
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    • About the Rocky Mountain Horse >
      • History of the Rocky Mountain Horse Breed
      • Other Mountain Horse Breeds
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      • Basic Genetics Expanded
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      • Horse Color Genetics >
        • Basic Color Genes
        • Special Color Genes >
          • Special Color Details
        • The Colors >
          • Red
          • Bay
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          • White
          • Gray
          • Chocolate
          • Cream Gene Colors >
            • Palomino
            • Buckskin
            • Black Buckskin
            • Cremello
            • Perlino
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          • Paint
          • Roan
          • Appaloosa Horses
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horse Colors: Gray 

Gray Horses

Most horse that we think of as white are technically Gray horses. We call a horse Gray when it has the most common of the white color gene (the Gray gene) turned ON. These horses are born a non-white color (could be any other color at all) and gradually turn white over the course of their lives. This process of turning white can happen quickly so that the horse is pure white by the time it is only a few years old, or so slowly that it never reaches pure white and spends most of its life as an in-between gray color. It is even possible, though very rare, for a horse to turn so early (in utero) that it is mostly white by the time it is born. 

Picture

Genetics: the Gray gene is a simple ON/OFF switch with the ON version being dominant. The horse may be any base color, as well as any other Special Color. One or both of its Gray genes will be turned ON. 
​
Description:  Gray horses will be born some other color and begin to change as early as a few months of age. The in-between Gray stages, from which the color gets its name, can be quite striking, but all horses will eventually turn pure white if they live long enough. A horse of this color has dark skin underneath its hairs (rather than pink) and this can be seen around the mouth and nose. 
​

STAGES OF COLOR IN A GRAY HORSE:

Every gray horse changes color at a different rate, some becoming pure white at a very young age and some remaining some medium form of gray most of their lives. Here is an example of a Gray filly we raised and her coloring stages during the first five years of her life.
Picture
This filly was born bay.
Picture
By the time she was three years old, she looked more like a roan than a bay. Notice that her tail has largely turned white at this point.
Picture
By the time she was 5 years old, this filly had reached a stunning gray in-between color.

And here are some more examples of Gray horses...
Picture
This Gray mare turned early and has been pure white for as long as we have known her.
Picture
Many Clydsdales are Gray. They are born a solid color (such as Chestnut or bay) and turn gray rather quickly. It is common among these horses for the graying process to be slow enough after its initial start that the horse spends most of its life looking a consistent, in-between, gray color.
Picture
This Gray horse turned rather quickly and soon left her lovely gray stage behind for pure white.
Picture
At two years old, this filly has only a hint of the speckling which will soon turn her gray.

Foal Colors
Gray horses are rarely identifiable as gray at birth. They usually don't start to "gray out" until later in life, though the filly in the middle bellow was already speckled by the time she was six months old.
Picture
These two foals look the same but one will be as white as her mother by the time she is ten years old.
Picture
This filly started out pure bay but soon changed to a striking gray and is quickly making her way towards white.
Picture
(Ignore the white bandage around her belly) This filly was a beautiful dusky gray by the time she was ten years old

Other Color Genes Mixed With Gray
​

Any other color can be mixed with the Gray gene. In this case, whatever other color the horse would have been without the gray gene is what the horse is born looking like. This color then will slowly fade (at a different rate in each horse) into an in-between gray color and eventually into pure white.

Other Colors Easily Mistaken for Gray

Roan can easily be mistaken for gray at some stages, as well as some of the other whites such as cremello, perlino or a very light palomino.

Palomino - A very light palomino can easily be mistaken for Gray. 
Picture
This palomino horse was basically white from birth - the lightest palomino I have ever seen.
Cremello or Perlino - These horses are often mixed up with Gray. The way to tell the difference is by what color their underlying skin is. Look at the skin around the horse's nose, for instance. Is it dark or pink? Only the cream-gene horses (Cremello or Perlino) will have pink skin under its white hair.
Picture
This is a cremello horse. Unlike grays, this horse has pink skin underneath its white hair.
Roan - Gray horses in their beginning stages of changing can look like Roan horses somewhat. Both involve flecked white hairs imposed over another color. For instance, look at the picture of the horse on the right - this is a gray horse NOT a roan horse.
Picture
This horse looks roan, but is actually in the early stages of graying out.

return to horse colors overview

Location

raising rocky mountain horses
​for every rider

Because when the mountains are wild,
the horse shouldn't be!

Wild Mountain Farms
PO Box 209
25111 Mill Creek Rd.
Frenchtown, MT  59834
406-239-4748
info@WildMountainFarms.com
Christie and Dave Goodman

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  • WildMountainFarms
  • About Us
    • Ishmael by Daniel Quinn
    • Christie's Writing
    • Dave
  • Our Stallion
    • 2021 Breeding Season
    • 2020 Breeding Season
    • The Breeding Process
    • Schedule Your Breeding
    • Breeding Contracts and Fees
    • Color and Our Stallion
  • Education
    • About the Rocky Mountain Horse >
      • History of the Rocky Mountain Horse Breed
      • Other Mountain Horse Breeds
      • What They Look Like
      • Temperament of the Rocky Mountain Horse
      • What They Do
      • Where to Find a Rocky Mountain Horse
      • Cost of a Rocky Mountain Horse
      • Genetic Testing
    • Breeding Education >
      • Deciding to Breed
      • Choosing a stallion
      • Getting Started
      • Breeding Costs
      • Breeding Basics >
        • Timing Details
      • AI vs Live Cover
      • Pre-Breeding Preparation
      • Breeding Contract
      • Live Foal Guarantee
    • Basic Genetics >
      • Basic Genetics Expanded
    • Color Genetics >
      • Horse Color Genetics >
        • Basic Color Genes
        • Special Color Genes >
          • Special Color Details
        • The Colors >
          • Red
          • Bay
          • Black
          • White
          • Gray
          • Chocolate
          • Cream Gene Colors >
            • Palomino
            • Buckskin
            • Black Buckskin
            • Cremello
            • Perlino
            • Smokey Cream
          • Champagne
          • Paint
          • Roan
          • Appaloosa Horses
    • Raising a Foal Right
    • Transporting Horses Long Distance >
      • Transport Paperwork
      • Transport Equiptment (Big)
      • Transport Equiptment (Small)
      • Feed and Water For Transporting
      • Driving Practices for Transporting
      • Transport Tips
  • Horses For Sale
    • Stormy-SOLD!
    • Smudge-SOLD!
    • Copper-SOLD! >
      • Copper Stories
  • Our Horses
    • Lady
    • Cowgirl
    • Belle
    • Sugar
  • Our Animal Partners
  • Our Human Partners
  • Contact Us
  • Western Montana Riding Trails
  • The Pacific Crest Trail
    • Who We Are >
      • Why and What
      • Christie
      • Kaladin
      • The Horses
      • Riding Companions
      • Local Resources
      • Home Team
    • Strategy and Goals
    • PCT Basics
    • PCT Water
    • PCT Safety
    • PCT Timing
    • PCT Maps
    • PCT Permits
    • PCT Resources
    • PCT Contacts
    • PCT Gear >
      • backpacking gear List >
        • Shelter >
          • Tents
        • Sleeping Bag
        • Sleeping Pad
        • Camp Chair
        • Water Purifier
        • Water Reservoir
        • Kitchen Gear
      • horse packing gear
      • dog packing gear
      • safety gear
      • photography gear
      • packing organization
  • AirBnB Cabin
  • Wildflowers of Western Montana
    • Arnica
    • Arrowleaf Balsamroot
    • Bear Grass
    • Biscutroot
    • Bitterroot
    • Buttercup, Sagebrush
    • Buttercup, Common
    • Bluebell
    • Cinquefoil
    • Deptford Pink
    • Fleabane
    • Glacier Lily
    • Goldenrod
    • Harebell
    • Indian Paintbrush
    • Kinickinick
    • Larkspur
    • Lupine
    • Mouseeared Chickweed
    • Oregon Grape
    • Oxeye Daisy
    • Pasque Flower
    • Prarie Smoke
    • Salsify
    • Shooting Star
    • Thistle
    • Wild Hyacinth
    • Wild Onion
    • Wild Rose
    • Wild Strawberry
    • Wild Sunflower
    • White Campion
    • Woodland Star
    • Yarrow
    • Plant ID Books I Like
  • Goats
    • Goat Enclosures
    • Feeding Goats >
      • Feeding Dwarf Goats >
        • Dwarf Goat Hay
  • Sheep
  • Horsepacking
    • How Many Horses
  • Sheep