Thread:MinuettePL/@comment-82.0.201.168-20190602151553/@comment-37824137-20190602152912

Once you have the certificate you can breed as many T4s of that breed as you like for as long as you'd like. You get a chance for a tier 4 by breeding with a tier 4 or breeding two tier 3s. The certificates are on a time-limit, it says so on the purebreeder's society. The certificates change each month, but you can still breed a T4 Knabstrupper afterwards when you have the certificate.

I reccommend checking out the Purebreeders Society page