In the new Batman Incorporated #1 the newest Robin, Damien Wayne (Batman's Son), shows his love for a bovine friend and dubs him Bat-Cow. However, Bat-Cow can be found prior in the pages of Tiny Titans, below you'll see Bat-Cow with that comic's version of Damien. There's no way to know without asking Grant Morrison, but could he possibly have come up with his Bat-Cow without reading Tiny Titans? I kind of wish Batman: Brave and Bold was still around so Bat-Cow could make a cameo.