Breeders licenses are ranked from Z to A, where Z is the lowest and A is the highest license. Having a higher license is better, because the higher your license the more your pets will obey your commands. Having a high breeders license doesn't mean your pet will always obey your commands though, you will also need to increase your pets bonding level.
If you have a breeders license you will be ranked among the top breeders and you will be able to adventure at more places.
That's what I wrote, I basically need it rewritten.