What color is this bunny?! ***PICTURES***

[ChickenPotPie]

Different names/nic names for the same color: Tortoiseshell, Tort, or Black Tort (to differentiate from Blue Tort). Cute. Interesting fur, huh? I'd have thought Pickles was a mutt.

 

[ZCrazychicklady]

So, the dad is Castor and mom is Black? Where did that Tort come from?
And by all means, you folks are right about Pickles, no way is she a pure MR with that coat on. I thought more like a Satin when I first glanced at the picture.
I raise MR but I am not as well versed in color crossings as some of you are. I just know the best way to get good colored Castors is to breed to good colored Castors and stay away from crossing with Black because they get too black on the hair tips (been there and done that enough times )
I don't have Torts at all, so I get a little confused on how that plays into things. I finally think I understand how Chocolate happens, and that was an accomplishment!

 

[Bunnylady]

So, the dad is Castor and mom is Black? Where did that Tort come from?

Tort is the result of self genes (aa) at the A locus, and non-extension genes (ee) at the E locus.
Black is the result of self genes (aa) at the A locus, and a normal extension gene (E_) at the E locus.
Castor is the result of an Agouti gene at the A locus (A_), and a normal extension gene (E_) at the E locus.

Since Self (a) is recessive to Agouti (A), it is possible for an Agouti to carry, but not express, a self gene, and pass it on to its offspring. Non-extension (e) is recessive to normal extension (E), so it is possible for Black and Castor to carry, but not express, a non-extension gene, and pass it on to their offspring, too. So this Black rabbit is aaEe, and the Castor is AaEe. When a baby inherits the recessives from both parents, the result is aaee, or Tort.