Here's why:
* Different registries: Various breed registries recognize different breeds, and some breeds may be recognized by one registry but not others.
* New breeds: New breeds are constantly being developed through selective breeding.
* Local variations: Within established breeds, there can be regional variations that may not be officially recognized as distinct breeds.
However, there are estimated to be over 200 recognized horse breeds worldwide. Some sources even estimate the number to be closer to 300.
Keep in mind, this number is constantly changing as new breeds are recognized, and some may be discontinued or merged with others.