# Aller Breeders **Breeding Re-Roll:** Breeders minted between 1643 to 1760 provide the ability to re-roll a Breeding session. When you open either a Greyhound Racer or Whippet pack and have a Breeding Re-Roll breeder in your kennel you will have the option to accept the original hound or re-roll and try again for a better outcome. All Aller Breeders have been minted and may be available on the secondary market. ![](/files/bR2KNSQZs7fRwIEoT6IU) In addition to the Re-Roll Collar, you will also be able to view a badge on the view page for opened and unopened hounds as per the image below. ![](/files/avJUDitEqo7wiKDrB3Q7) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://guide.muzzle.run/muzzle-run-docs/muzzle-run-racing/breeders-mint/aller-breeders.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.