Miniature Horse Resource Guide

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Disclaimer: The information on this page is to be used as a guideline.  Some information comes from SHG Members, while other information comes from internet sources.  You are advised to always contact your veterinarian regarding any health issuesThe officers and members of the SmallestHorse Group are not responsible for the content.

Development of the Miniature Horse Fetus

SHG Thanks Kim Landis of Crayonbox Miniature Horses

0-49 Days No photos available
At this stage of development, the the fetus is absorbed and not aborted.

50 Day fetus 1 1/2" long
Photo courtesy of Quarter Moon Farm

60 Day Fetus 3 1/2 inches long
Courtesy of Kickapoo Miniatures

138 Days (4 1/2 months), 11"

Chest to tail:  6.75"
Head to tail: 11"
Top of withers to bottom of hoof: 6"
Cannon bone: 1"
Dam was 30", Sire 27.75"

Courtesy of
Chaos Ranch

150 Days (5 months) approx. 10" long

Courtesy of SevenAcres Farm

169 Days (approx. 5.5 months)

Courtesy of Chaos Ranch

Approx. 210 Days (7 months) 16.5" long

Mare had difficulty passing fetus, may have been out of position and the reason from dark spots on shoulders and forehead.

Experienced broodmare, 30.5" tall, stallion 34", reason for abortion unknown. Mare prolapsed uterus following day and was retired from breeding.

7 months, 10 days (approx 220 days) 14" long, 10 lbs.

Filly died inutero, covered with fine hair (not visible), body decomposing, plancenta brown. Necropsy reported no conclusion as to cause of death.

Courtesy of Quarter Moon Farm

9 months (approx 275 days)

Colt, necropsy report found mare's placenta was thin. The mare aborted colt one day after 9 month Pnuemabort-K vaccination.

Courtesy of The Crabby Chicken Ranch

9 1/2 months (approx 290 days)

Red bag delivery with no bag development, no cause found.

Courtesy of SevenAcres Farm

10 1/2 months (approx. 315-320 days)

Buckskin/pinto colt, aborted/stillborn, necropsy showed he never breathed oxygen. Could have had cord wrapped around neck or birthing trauma, no way to tell which it was.

Courtesy of Quarter Moon Farm

Approx 326 Days (10 months)

Normal, healthy colt.
"C-Spots Little Bear"
33.75" Dam (same as colt below), 28.5" Sire

Courtesy of Crayonbox Miniatures

Approx 340 Days (11 months)

Normal, healthy colt, 22" tall at birth..
"Crayonbox Spotless Perfection"
33.75" dam (same as colt above), 34" Sire.

Courtesy of Crayonbox Miniatures


Do you have photos to add to this website?
Please e-mail me with the approx. gestation, length, and any other info.


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