> For the complete documentation index, see [llms.txt](https://guide.muzzle.run/muzzle-run-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guide.muzzle.run/muzzle-run-docs/muzzle-run-racing/breeders-mint/aller-breeders.md).

# 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)