Quote Originally Posted by frankykeno
Okay my rattie experts just a quick question. I have a Blue Self male. I have an Agouti Dumbo Eared female. I want a Blue Dumbo Eared offspring. Best recipe? I know Blue is a simple recessive. I believe Dumbo Eared is also a simple recessive so I should just have to produce double het offspring correct?
Correct...

But you will need to keep a close eye on them...double recessives have lots of potential issues (especially when blues are involved)...I end up with half being sterile.