They aren't horses (they're closer to rodent-reptiles), I put udders on females for exotics sake, and only later learned that horses, indeed, have them.

My deviantart upload has an infodump, but it's so long a chaotic, I can't read it myself without a heaache, so yeah, it stays as-is for now. Queen's body changed to be kind of what those breeder demons in Diablo 2 have shape-wise.