I've provided here a listing of many of the popular breeding theories, including some of the more unorthodox.  Whenever possible, I've included an explanation of the theory and any reference material that might be useful in further research and understanding of it.  If I haven't had the chance to write up these linked pages, check back at a later date.  This is a work in progress.

1. Breed the best to the best and hope for the best.

2. The racecourse test.

3. Proven versus unproven.

4. Nicks and Crosses.

5. Dosage.

Stamina Index.

Inbreeding and Linebreeding.

Bruce Lowe's Figure System.

The X-Factor.

Biomechanics.

Astrology.

*Market Breeding.