Dominant to Tiger! - Huckleberry
Hannah & Boydens first born is a Chimera - Spotted Flame
Their second offspring is a Tiger! - Huckleberry
Since Boyden hides Ocicat - Platinum or better he can't hide Tiger! - Huckleberry so we know Hannah hides it.
Therefore Bethseda hides either Bengal - Copper or as we now know Tiger! - Huckleberry. Therefore Chimera - Spotted Flame has to be dominant to Tiger! - Huckleberry