Which Horse breeds come in Graying?

Club breed standards describe Graying for the Criollo and Tennessee Walking Horse.

Horse pattern

Graying

Progressive whitening with age: a horse born colored turns gray and finally white, often dappled or flea-bitten on the way.

32 Horse breeds list Graying. It is in a club standard for 2 breeds.

Breed	ACCC	ABCCC	TWHBEA
Criollo	Standard (“se aceptan todos los pelajes”)	Standard (“Tordilha”)	No ruling
Tennessee Walking Horse	No ruling	No ruling	Standard (“Grey”)

How Graying can appear or change over an animal's life.