What is the highest age you can breed a miniature shetland?

There is no defined age limit for breeding miniature Shetland ponies, but it is generally recommended that they should be between the ages of 4 and 20 years. This is because ponies outside this age range may have difficulty conceiving or producing healthy offspring. Additionally, any pony over the age of 18 may be required to have a veterinary check to assess their health and fertility.