So, I've got this idea for a story that's been brewing in my head for a while now, of Earth being ruled by a single Government (the UNEDF, which spawned from the UN when humans took to the stars).
However, another plot twist is the Chimera's. They're these Half human/Half Canine (outwardly anyways) super-soldiers that the UNEDF engineered in an attempt to replace people on the battlefield. This didn't work of course, because there are billions of people, and a couple million Chimera's. So, the Chimera units were folded into the regular army, and as the population of Chimera's is steadily growing, into society as well.
This is the Mark III breed.
And that pretty well sums up that subject.