LOL - sound very normal! Right now, Pouncer and foster Minette have been pawing at each other under the door - even Allen's been pawing. But the moment I open the door for them to meet face to face, they growl and hiss at each other.

At the stage your two are at right now, they flip-flop from enjoying each other's company to hissing at each other. Its like "hey, you're fun!" then it "oh, yeah, I forgot, I'm supposed to not like you - HISS" Cats!