The Canadian Miniature Breed Association has established the following breed requirements for the Miniature Jersey breed in Canada:
a. Miniature Jerseys come in most shades of brown, from light fawn, all the way to mulberry; they're often seen with a broken coat, which are patches of white commonly known as 'painted'
b. Mealy-white band around the muzzle
c. Will have a dished face with a black nose and black pigment around the eyes
d. Switches can be black, white, or a combination of the two
e. Must have black hooves; some white may be present if there is a white marking above the hoof
f. Small, smooth dairy frame
g. When measured to the top of the hip at 3 years of age, cows must be no taller than 44" and no shorter than 36", while bulls must be no taller than 46" and no shorter than 38". Cows measuring between 44.1" and 46" can be registered as a mid-mini.
Animals that do not meet these breed requirements may still be eligible for registration as part of the CMJA's Grading-Up program, which you can read about at What is a breeding plan?