New!
old kitty is not pleased
New cat: mew!
Old cat: hiss!
We've been calling the new one Mishka ("mouse" in Russian, b/c Marlinka is eyeing it like, "wtf dinner?"), or Malish/Malishka ("malish" meaning "little one" in Russian). New kitty has no idea it even has a name. If Marlinka is like panther, Malishka is like a cheetah. :)
They're not getting along though. Malishka might go to sister's.
//Edit: new kitty is officially named Dasha now.