Explain this please!

Alright here goes...I breed a buck and doe who I believed were fuzzy carries. To my delight I got 2 wavy furred carriers and 5 fuzzies. 2 does and 5 bucks. All with curly whiskers. Sometime after 4 weeks this is what happened 2 grew in fur, I mean a full coated. 1 never changed and the other 2 grew more fuzzy type hair, by that I mean just very little. However 1 growers fuzzy hair on it back half only. What the heck is going on. And more specific what do I have in this litter. Can't wait for replies! Ps some of the bucks will be available at show.

Fuzzy can vary wildly from nearly hairless to a very thick soft side of velco looking coat.