Hellow every one i wanted to ask about somthing odd a bit.. i know that rex is not a gene that a rat can be "Het" for (or is it?) But i bred these two adults, a full black male to a hooded albino. Everything was normal untill i noticed one is just getting big and the fur is wierd - almost non, alot like a double rex. I know the mothers sister is a rex so i will show you the outcomes and if you will be able to guess why is like that i will thank thank u alot!
these are the parents:


and these are the kids there are 5, i dont know why maybe because of that it is the the fathers first time.



you can see hooded as expected, albino is also expected and full black as well. All as usual, but how did this furless guy is connected to the whole story??
Thank you for your time