Breed Standards for Registration

1. Jacks, jennets and geldings of any age may be accepted to registry without regard to measurement when their sire and dam are registered with the AMJR/SJJR. Exception(s) explained as follows:
   
   
   
   • The registry reserves the right, at any time, to visually inspect an animal for which the application to registry by pedigree is submitted.
   • The registry also reserves the right, at any time to require a certificate and/or affidavit from a licensed veterinarian certifying height, size, color and/or age of an animal for which acceptance to registree by pedigree is being sought.
   
   
2. Application must include name of animal, color, sex, date of foaling and name and address of breeder and owner.
3. In registering foundation stock, give name and AMJR/SJJR registration number of sires and dams as far back as possible.

1. Jacks must measure no less than 14.2 hands, standard measure, in height; at least 61 inches around heart girth; and at least 8 inches at cannon bone (measured around cannon bone midway between the knee and fetlock).
2. Jennets and geldings must measure no less than 14 hands, standard measure, in height; at least 61 inches around heart girth; and at least 7.5 inches at cannon bone (measured around cannon bone midway between the knee and fetlock).
3. When applying for registry by measurements, submit three (3) photos with the application showing the entire animal clearly, front, rear and side view.
4. The registry reserves the right at any time to:
   
   
   
   1. visually inspect an animal for which application by measurements is being submitted;
   2. require a signed certificate and/or affidavit from a licensed veterinarian, stating the height, size, color and/or age of an animal for which application by measurements is being sought;
   
   

In order to stay true to the original color standard of the American Mammoth Jackstock, white and spotted animals are not eligible to be registered. Solid colored animals (excluding white) and roans are preferred colors.

A burro cross is not a characteristic of this breed. An animal bearing the burro cross is not eligible for acceptance to registry.