So, I started breeding feeder rats for two reasons:
1. Food
2. Because pythons take so long to do what they do, breeding rats quells my extreme impatience.

I love getting new color combos, but I have no idea how they happen!

I have two breeder male rats and a few females, but every now and again, something bizarre (like a solid gray rat from a black x tan hooded pairing) will pop up. And I have no clue why.

Does anybody have a good resource on rat genetics?