When is mating season for horses and when does it end?

Answer 1

The natural mating season for horses in North America is approximately April-August although mares and stallions can continue to breed until Oct or November under the

right circumstances.

Many owners/breeders put their mares under lights in November or December and

create an artificial breeding season. For example: the Thoroughbred industry prefers

foals to be born as early as possible in the calendar year to insure the foal has better size for sales.

Most big Thoroughbred farms in KY open their breeding sheds around February 8th and close them the beginning of July.